Certain 2014 328i models are certified to
California’s stringent Super Ultra Low Emission
Vehicle (SULEV) standards and also qualify as a
Partial Zero Emission Vehicle (PZEV) under the
California Air Resources Board Zero Emission
Vehicle program. In addition to very low tailpipe
and zero-evaporative emissions, this PZEV
certification includes a unique warranty when the
vehicle is registered in California and certain
other states, as indicated in the SULEV (PZEV)
section beginning on page 39. SULEV (PZEV)
models registered in Delaware, Oregon,
Pennsylvania and Washington are covered by the
California Emission Warranty beginning on
page 26.
The emission certification standard can be
verified on the Vehicle Emission Control
Information label located in the engine
compartment. A representative label is shown
below; the SULEV (PZEV) certification is stated
after the word “California.”
xDrive, 335i, 335i xDrive, ActiveHybrid 3
xDrive, 550i, 550i xDrive, ActiveHybrid 5
750Li, 750Li xDrive; 760Li, ALPINA B7 (short and
long wheelbase), ALPINA B7 xDrive (short and
long wheelbase), ActiveHybrid 7
BMW Ultimate Service™
BMW Ultimate Service leads the industry in
providing owners with incredible value and peace
of mind. This service includes:
䉯 The BMW Maintenance Program: No cost
factory-recommended maintenance for
4 years/50,000 miles from the original
in-service date, whichever comes first.
䉯 BMW Roadside Assistance: No-cost 24/7
on-the-road assistance for 4 years/unlimited
miles from the original in-service date. Also
includes trip-interruption benefits as well as
trip routing services.
䉯 New Vehicle Limited Warranty: Limited
coverage for defects in materials and
workmanship for 4 years/50,000 miles from
the original in-service date, whichever comes
first. Repairs will only be made at authorized
BMW centers using Original BMW Parts.
1
Special Notes on the BMW
Advanced Diesel Engine
䉯 At ambient temperatures below approximately
32ºF, starting the engine of the 328d and 535d
may be delayed for a few seconds while the
automatic fuel preheating system is active. An
indicator lamp in the instrument cluster will
illuminate during this time. The engine will
start only after the indicator lamp goes out.
Automatic fuel preheating indicator lamp
䉯 Engine breaking-in: Prior to driving the first
approximately 1,250 miles, do not exceed an
engine speed of 3,500 rpm; avoid full-throttle
acceleration, and using the “kick-down”
function of the transmission. After this
mileage, engine speeds can be gradually
increased.
䉯 The BMW Advanced Diesel engine is
designed to run only on Ultra Low Sulfur
Diesel (ULSD). This fuel designation contains
a maximum of 15 parts per million (ppm) of
sulfur. Service stations which dispense this
fuel will have their pumps marked with this
information (or similar):
䉯 A Cetane rating of 51 or higher is
recommended for use in BMW Advanced
Diesel Vehicle.
䉯 The use of biodiesel fuel is acceptable as long
as the content is no higher than 5% (B5) which
meets ASTM D6751 specification. If a
biodiesel rated higher than B5 (such as B10 or
B20) is pumped into the vehicle, damage to
the fuel system components may occur.
䉯 If gasoline, B10 or higher biodiesel, or any
other improper fuel (i.e., low-sulfur diesel) is
pumped into your diesel vehicle: at the first
notion of the mistake, stop pumping and do
not start the vehicle, not even to move it away
from the filling pump. Serious engine damage
can occur! Contact your authorized BMW
center or Roadside Assistance immediately.
䉯 The BMW 328d and 535d are equipped with a
misfueling system which is intended to
prevent gasoline from being pumped into the
tank. Most automotive diesel fuel nozzles will
be of the recommended diameter (24 mm).
When inserted into the fuel-filler neck, the fuel
nozzle simultaneously presses two safety tabs
located inside the fuel-filler neck; this will allow
the fuel nozzle to be fully inserted for refueling.
A gasoline fuel nozzle diameter is smaller (21 mm)
than an automotive diesel fuel nozzle. If a gasoline
fuel nozzle is inserted into the fuel-filler neck of
your diesel vehicle, the smaller diameter fuel nozzle
will not be able to simultaneously press the two
safety tabs; this will prevent the fuel nozzle from
being fully inserted into the fuel-filler neck.
䉯
To allow emergency filling of diesel fuel in
locations using a commercial (truck) size diesel
fuel filler nozzle which is larger than the nozzle
for passenger cars, and/or for filling stations
which dispense diesel fuel from a nonconforming sized nozzle, a diesel misfueling
bypass adapter is included in your car.
䉯 The BMW diesel engine oil is different than oil
used for BMW gasoline engines. Use only
“low-ash” fully synthetic oils meeting BMW’s
long-life rating LL04 (API rating CF). One such
oil is Castrol’s SLX Professional OE SAE
5W-30 (Castrol #06070). This oil is also
available at authorized BMW Centers under
BMW part number 07 51 0 037 195. There is a
reference label located in the engine
compartment with this part number.
2
䉯 The 328d and 535d are equipped with a
traditional dipstick located in the engine
compartment (item #1 shown for 328d;
location similar for the 535d).
To check the engine oil level:
1. Park the vehicle on a level surface with the
engine at operating temperature (i.e., after
driving continuously for at least 7 miles).
2. Turn the engine off.
3. Wait at least approximately 5 minutes.
4. Pull the dipstick out and wipe dry with a
lint-free cloth, paper towel or similar item.
5. Carefully push the dipstick fully into the tube,
then pull out again.
6. The oil level must be between the two marks.
change before it needs to be refilled. However,
depending on your vehicle needs, you can run
out of DEF before you reach the interval. The
instrument cluster warning lamp will warn you
before DEF is depleted, starting at
approximately 1,000 miles.
Refill DEF indicator lamp (yellow)
Note: If you continue to drive until the mileage
reaches 0, a new warning will appear (NO START
IN–––MILES). Once this warning appears,
you will only be able to restart the engine one
more time if this is done within 3 minutes of
last shutting it off. Beyond this time interval,
the engine will not restart until DEF is refilled!
Empty DEF indicator lamp (red)
DEF is available from your nearest authorized
BMW Service Center. Or, refer to your vehicle
Owner’s Manual for refilling DEF yourself.
䉯 An additional warning lamp in the instrument
cluster may illuminate if the diesel particulate
filter requires service.
䉯 The quantity of oil between the two marks is
approximately 1 quart.
䉯 The 328d and 535d are equipped with
Selective Catalyst Reduction (SCR)
technology. Diesel Exhaust Fluid (DEF) is
injected into the exhaust system to help
reduce the emissions of nitrogen oxides (NOx).
DEF is designed to last until your next oil
Diesel particulate filter indicator lamp
The BMW Maintenance Program
The BMW Maintenance Program is a benefit
designed to help reduce the cost of ownership.
This program has been devised with the
following objectives: to maximize vehicle safety,
reliability, and resale value by minimizing
breakdowns resulting from wear, and minimizing
cost and inconvenience by computing
maintenance intervals based upon the specific
manner in which each individual vehicle is driven.
A 2014 3, 5 and 7 Series vehicle purchased from
an authorized BMW center in the United States
(including Puerto Rico) is covered by the BMW
Maintenance Program for 48 months or
50,000 miles, whichever occurs first. Coverage
begins on the date of first retail sale or the date
3
the vehicle is first placed into service as a sales
demonstrator, Aftersales Mobility Program (AMP)
Vehicle or BMW Group company vehicle,
whichever is earlier.
Any authorized BMW center in the United States
(including Puerto Rico) will perform the
scheduled and/or additional maintenance
services on your vehicle at no expense to you so
long as your vehicle qualifies for coverage under
the BMW Maintenance Program.
Coverage
The BMW Maintenance Program covers all
factory recommended maintenance, as
determined by the Condition Based Service
(CBS) system. Additional specific items that
need replacement due to normal wear and tear,
and that are not covered by the original New
Vehicle Limited Warranty - such as brake pads,
brake rotors, and wiper blade inserts - are
included, provided wear and tear exceeds BMW
wear limits. Any applicable adjustments required
due to normal operating conditions are also
included. See pages 8-10 of this booklet for
additional information.
Exclusions from coverage include the following:
䉯 Items reimbursable under your New Vehicle
Limited Warranty
䉯 Gasoline and diesel fuel
䉯 Gasoline and diesel fuel additive
䉯 Diesel glow plugs
䉯 Diesel particulate filter
䉯 Windshield washer additive (except when in
conjunction with scheduled maintenance)
䉯 Tires, wheel alignment, tire balance and
rotation
䉯 Parking brake shoes/linings
䉯 Reset Tire Pressure Monitor
䉯 Wear and tear of soft trim items, such as:
seats, carpets, moldings, headliner, door
panels and all chrome trim
䉯 Damage, including consequential, which
results from negligence, improper operation of
the vehicle, wear and tear or deterioration due
to driving habits or conditions, improper repair,
environmental influences, flood, accident or
fire damage, road salt corrosion, alteration,
installation of non-genuine BMW accessories,
or use of improper, poor quality or
contaminated fuel
䉯 Altered or unreadable Vehicle Identification
Number (VIN) or odometer irregularities or
vehicles where the true mileage cannot be
determined
䉯 Maintenance or repair after the vehicle is
deemed a total loss
䉯 Maintenance or repairs performed by other
than an authorized BMW center within the
United States (including Puerto Rico)
䉯 “Topping off” low fluids (e.g., engine oil,
antifreeze, washer fluid, etc.) except when
done in conjunction with a scheduled
maintenance or other required maintenance
work (as outlined in the customized
maintenance checklist printout) that is
performed during an applicable Maintenance
Program period
䉯 Vehicles used in competitive events
䉯 Oil changes performed outside the
recommended maintenance intervals as
indicated by the Condition Based Service
䉯 DEF refills performed outside the
recommended maintenance intervals as
indicated by the Service Interval Display (328d
and 535d only)
Maintenance Upgrade Option
Please contact your authorized BMW center for
information regarding the purchase of optional
Maintenance Program Upgrades. Eligibility and
coverage exclusions may apply.
Intervals
Time intervals should be followed using the
maintenance intervals as indicated by the BMW
Condition Based Service.
Maintenance intervals on motor vehicles have
conventionally been specified based upon
accumulated mileage. However, driving
conditions have a major influence on routine
maintenance requirements; distance traveled is
4
only one of the significant factors. A vehicle
driven for 50,000 miles of short trips in the city
with numerous cold starts, prolonged periods of
idling, stop-and-go driving, and high engine
speeds during acceleration requires more
frequent maintenance intervals than a vehicle
driven for 50,000 miles for long distances at low
engine speeds primarily at operating
temperature.
The advanced technologies at BMW have led to
the development of the unique BMW Condition
Based Service (CBS) system which computes
the actual optimum maintenance requirements
based not only upon the accumulated mileage,
but taking into account important factors such as
high or low engine speeds, short or long trip
driving.
Condition Based Service (CBS)
CBS is a further development of the Service
Interval Indicator System.
The remaining times for selected maintenance
tasks as well as any legally prescribed dates are
displayed to you individually:
䉯 Engine oil
䉯 Brakes - front and rear separately
䉯 Brake fluid
䉯 Vehicle check
䉯 Required State Inspection(s)
CBS thus determines the current and future
maintenance requirements. This data can also be
read from the vehicle key by your BMW Service
Advisor and used to propose the optimum scope
of maintenance.
Disconnecting the battery during periods of
long-term storage will interrupt the
calculation of time-based services. BMW
recommends that you have all items requiring
time-based maintenance, such as brake fluid and
possibly also the engine oil and microfilter,
brought up to date by your authorized BMW
center. Also see the section on battery care on
page 11 of this Booklet.
Service Required Display
Info Display screen contents
3 Series and 5 Series
7 Series only
The distance remaining until your next service
briefly appears when you switch on the ignition.
For certain maintenance operations, you can
view the respective distance remaining or due
date individually in the Control Display.
Control Display screen contents
(vehicles with iDrive)
The current Status of Service items determined
by the CBS are shown in the Control Display.
You can also view additional information on the
service and maintenance requirements.
1. Open the start menu.
2. Press the controller to open the i-menu.
3. Select “Info sources” and press the
controller.
4. Select “Service Info” and press the controller.
5
5. If necessary, move the highlight marker. Turn
the controller until “Vehicle status” is
selected and press the controller.
6. If necessary, move the highlight marker. Turn
the controller until “Status” is selected and
press the controller.
A list of selected maintenance operations and, if
applicable, inspections required by law is
displayed.
You can request more detailed information on
every entry.
Select the entry and press the controller.
Symbols
No service is currently required.
The deadline for service or a state
inspection is approaching. Please contact
your authorized BMW center for an
appointment.
The service deadline has already passed.
You can request more detailed information on
every entry.
Turn the controller to scroll through the list, then
confirm the selected entry.
Confirm to exit the list.
The current service status is automatically saved
in the vehicle’s key. The Service Advisor at your
authorized BMW center has a device called a key
reader. When your Service Advisor inserts your
key into the key reader, all pertinent vehicle and
servicing data will be available, and a customized
maintenance checklist is printed out based on
the specific operations called for by the
Condition Based Service.
To exit from the menu:
Select the
arrow and press the controller.
Special Note – Maintenance Intervals
The maintenance requirements for your vehicle
are determined dynamically by the Condition
Based Service (CBS) system. The maintenance
items stated herein reflect the latest information
available at the time of the printing of this
Booklet, and are subject to change.
6
2014 3 Series Sports Wagons built prior to July
2013 utilized a different CBS “connected service
item” interval as detailed on page 11.
The completion of certain subsequent
maintenance items or services, as required to
properly maintain your vehicle, will be specified
at intervals computed by the BMW Condition
Based Service system as follows:
䉯 Oil Service: Engine oil should be changed with
the engine at operating temperature.
All 2014 model year 3 (except 328d see below), 5
(except 535d see below) and 7 Series vehicles
are factory-filled with BMW High Performance
Synthetic oils. We recommend BMW High
Performance 5W-30 Synthetic Oil (BMW part
number 07 51 0 017 866) for regular scheduled
engine oil changes.
The 2014 model year 328d and 535d are
factory-filled with a different BMW High
Performance Synthetic oil than on gasoline
engines. We recommend BMW High
Performance 5W-30 Diesel Synthetic Oil (BMW
part number 07 51 0 037 195) for regular
scheduled engine oil changes.
BMW recommends that you check your engine
oil level whenever you add fuel to your vehicle.
For information on checking your engine oil level,
refer to your vehicle’s Owner’s Manual.
If you need to add oil between oil changes and
BMW High Performance Synthetic Oil is
unavailable, for the purpose of topping up the
engine oil level only, BMW recommends use of
one of the below-listed synthetic oils:
For gasoline engines: the synthetic oils listed
below meet BMW’s Long-life rating LL01 (API
rating SL):
䉯 Castrol Syntec European Formula SAE 0W-30
䉯 Castrol Edge with SPT SAE 5W-40
䉯 Mobil 1 SAE 0W-40
䉯 Pennzoil Platinum European Formula Ultra
SAE 5W-30
䉯 Valvoline SynPower SAE 5W-30
For the 328d and 535d diesel engines: the
synthetic oil listed below meets BMW’s Long-life
rating LL04 (API Rating CF):
䉯 Castrol SLX Professional OE SAE 5W-30 Fully
Synthetic (Castrol #06070)
The choice of the right SAE grade is based on
the climatic conditions in the region in which you
normally drive your BMW. To best determine
which SAE grade is best suited for your vehicle,
contact an authorized BMW center.
If you are unable to obtain a recommended
synthetic oil from the list above, for the purpose
of topping up the engine oil level only, use only a
synthetic oil with an API rating of SM or higher.
The following maintenance services:
– Brake Fluid Service;
must be performed when required as indicated
by the following as applicable:
䉯 The specified CBS engine oil service counter
interval
䉯 The time interval (the first occurrence based
on the vehicle’s production date)
䉯 The stated mileage for a “non-connected”
maintenance service
Refer to pages8-11foradditional information.
Additionally,
– The engine coolant has a long-term rating and
does not need to be changed except for system
repairs.
– Excluding the ActiveHybrid models, the
automatic and manual transmissions, and the
all-wheel drive transfer cases installed in BMW
vehicles are factory filled with long-term rated
fluids. The transmission long-term rated fluid
does not need to be changed except when
necessary during repairs to the transmission.
The transfer case long-term rated fluid does
not need to be changed except when indicated
by the vehicle or when necessary during repairs
to the transfer case.
7
For your convenience, you may also wish to have
your authorized BMW center perform any
necessary operations to fulfill any state
inspection requirements in your area, concurrent
with the maintenance services specified above
during other repairs. Should you request more
frequent maintenance service, the cost of
these services will not be covered by the
Maintenance Program.
BMW has applied the most modern technological
advances not only to the design and production of
your vehicle, but also to computing of the optimum
maintenance interval for your type of operations
and driving style. Your authorized BMW center has
made a substantial investment in unique BMW
special service tools to enable BMW factory trained
service technicians to perform quality repairs on
your BMW in minimal time, to help maximize your
satisfaction with your BMW, its longevity, and
resale value.
Quality Certification I
For a detailed list of items inspected, refer to the
Quality Certification I form provided to the Owner
at time of delivery. A copy of the form is on file at
the selling authorized BMW center.
Fuel Quality – Gasoline (gasoline
engines only)
Only use fuels advertised to have adequate
detergency and low alcohol (such as ethanol)
content. Please refer to your owner’s manual for
important information on the fuel recommended
for use in your vehicle. Use of fuels with
insufficient detergent and/or excess alcohol can
cause driveability problems that necessitate
cleaning intake valves and fuel injection valves,
and, when applicable, adjusting the engine idle.
We suggest having this work performed by your
authorized BMW center, perhaps while regular
maintenance is performed. Your authorized BMW
center can also recommend a gasoline additive
that will provide sufficient detergency.This
recommended unscheduled maintenance which
may be necessitated by use of inappropriate
fuels is not required in order to maintain the
emission warranty. It also is not covered by your
vehicle’s warranty because no defect in material
or workmanship or component failure is involved.
Note: for diesel fuel please see page 2.
Maintenance Service Summary
The Condition Based Service (CBS) system will
determine the requirement for performing the
maintenance services described in this section,
ending on page 10. These services may be
required either individually or in conjunction with
other maintenance services.
Maintenance services are performed as outlined
in this section, based on intervals of either time,
mileage or after performing a specified number
of previous services. These intervals correspond
to the latest information available when this
Booklet was printed. Maintenance intervals are
subject to change with newer vehicles or may
also apply retroactively. Your authorized BMW
center will be able to advise and perform
maintenance services as required by the most
recent information that applies to your vehicle.
The maintenance services “connected to a
specific CBS engine oil service,” as outlined
below, apply to vehicles built as of July 2013.
3 Series Sports Wagons built prior to July 2013
utilized a different CBS “connected service item”
interval as detailed on page 11.
Standard operations
Maintenance work:
䉯 Verify Check Control messages.
䉯 Check indicator and warning lights.
䉯 Reset CBS display.
䉯 Inspect tires, adjust tire pressures and reset
Tire Pressure Monitor.
䉯 Check parking brake functionality while the
vehicle is being driven into the workshop.
8
Engine oil
Rear brakes
Maintenance work:
䉯 Gasoline engines: change the engine oil and
oil filter (as shown in CBS). We recommend
BMW High Performance 5W-30 Synthetic Oil
P/N 07 51 0 017 866.
䉯 328d and 535d only: We recommend BMW
High Performance 5W-30 Diesel Synthetic Oil
(BMW part number 07 51 0 037 195)
䉯 328d and 535d only: Top up Diesel Exhaust
Fluid.
Maintenance services connected to a
specific engine oil service*
*These additional connected services will not be
shown in the vehicle’s CBS display.
Maintenance work:
䉯 After every 2nd Engine Oil Service: Ventilation
microfilter: replace ventilation microfilter.
䉯 After every 5th Engine Oil Service: Intake air
cleaner: replace air filter element (reduce
replacement interval in dusty operating
conditions).
䉯 328d and 535d: At every 4th Engine Oil
Service: replace diesel fuel filter.
䉯 ActiveHybrid 3, ActiveHybrid 5 and
ActiveHybrid 7: At every 3rd Engine Oil
Service: replace the automatic transmission
fluid.
Maintenance services that display in
CBS
Front brakes
Maintenance work:
䉯 Replace brake pads, clean brake pad contact
points in calipers.
䉯 Brake discs: Check surface and thickness,
replace as necessary.
Maintenance work:
䉯 Replace brake pads, clean brake pad contact
points in calipers.
䉯 Brake discs: Check surface and thickness,
replace as necessary.
䉯 Parking brake: Repair or replace parking brake
shoes/linings only if a reduction in the brake’s
effectiveness is noted. When fitted, parking
brake shoes/linings are excluded from
coverage under the BMW Maintenance
Program.
Vehicle check
Maintenance work:
䉯 Check operation of horn, headlight flasher and
Spark plugs (connected to specific
Engine Oil Service)*
Maintenance work:
䉯 Replace spark plugs at every 6th Engine Oil
Service (approximately 60,000; all models
except diesels)
*Not applicable for 328d and 535d.
Emission Control Maintenance
Schedule
The maintenance schedule as shown is required
for the proper functioning of the emission control
systems for optimum vehicle performance and
fuel economy.
Basic Engine
Engine oilAs specified by CBS
Engine oil filterAs specified by CBS
Connected maintenance services items
intervals for 2014 vehicles built as of July 2013:
Fuel System
Air filterReplace at every 5th
Fuel Filter (328d and
535d only)
Ignition System
(except 328d and
535d)
Spark plugsAt every 6th Engine Oil
Emission Control
Components
Oxygen sensor120,000 miles
Oxygen sensor
(320i, 320i xDrive, 328i,
328i xDrive, 328i xDrive
Gran Turismo, 328i
xDrive Sport Wagon,
335i, 335i xDrive, 335i
xDrive Gran Turismo,
528i, 528i xDrive, 535i,
535i xDrive, 535i Gran
Turismo, 535i xDrive
Gran Turismo, 740i,
740Li and 740Li xDrive
if eligible for the
California Emissions
Warranty)
Oxygen sensor
(SULEV (PZEV) only)
Oxygen Sensor Service: The oxygen sensor
deteriorates strictly on a mileage basis and must
therefore be replaced to maximize vehicle fuel
economy and minimize exhaust pollution.
Engine Oil Service
At every 4th Engine Oil
Service
Service (approximately
60,000 miles)
150,000 miles
150,000 miles
10
Connected maintenance services items
intervals for 2014 3 Series Sports Wagons
built prior to July 2013:
Fuel System
Air filterReplace at every 3rd
Engine Oil Service
Ventilation microfilterAt every brake fluid
service
Ignition System
Spark plugsAt every 4th Engine Oil
Service
12 Volt Battery Care*
If your car is driven only for short distances of less
than 10 miles over a prolonged period of time,
without an occasional drive at highway speeds, the
engine’s charging system will not maintain the
battery. Insufficient use of the vehicle could result
in short term starting problems and, in the long
term, could damage the battery.
In case the car is not operated for several weeks,
it is advisable to:
䉯 consider using a proper trickle charger,
following the charger manufacturer’s
instructions, to maintain the battery’s state of
charge; or
䉯 consult your authorized BMW center regarding
battery removal. Once removed, the battery
must be charged and stored in a cool, dry
place where it can be protected from freezing.
If the battery will be stored for over 3 months, it
must be recharged every 3 months, or else it
will become damaged and useless.
Please consult with your authorized BMW center
for further guidance and information.
*For the ActiveHybrid 3, ActiveHybrid 5 and
ActiveHybrid 7 the information above refers to
the 12 volt service battery and not the highvoltage battery.
Corrosion Protection
Extensive corrosion protection measures
implemented by BMW now make it possible to
offer a 12-year unlimited mileage anti-corrosion
warranty against rust perforation on your vehicle
provided that the vehicle is properly maintained.
Information on proper maintenance is available in
this Booklet and your vehicle’s Owner’s Manual.
The major degree of corrosion protection is due
to the electrophoretic dip painting process which
cathodically deposits paint particles on all body
parts, attracting paint particles into the minutest
cavities or seams. Body parts are designed to
provide optimum corrosion protection.
During manufacture, metal exterior body parts
receive an additional corrosion protection coat.
Hood, trunk, doors and other body parts are
coated with PVC and sealed from the outside.
All floor panels receive a resilient coating of PVC
for maximum protection against damage due to
stones, etc.
Corrosion protection materials tested over many
years are applied to the surfaces of cavities and
to the entire underside of the vehicle during and
after assembly.
For additional information on the 12-year
unlimited mileage anti-corrosion warranty see
the Warranty Section of this Booklet (page 22).
Restoring corrosion protection
Please take care that anti-corrosion material is
replaced when your car is repaired after body or
chassis damage.
BMW will not accept any liability for repair of,
or damage caused by, any parts and
accessories not approved by BMW.
Underbody maintenance
The underbody has to be cleaned at least once a
year, in Spring, with plain water in order to
remove mud, chemical sediments and other
deposits. If those materials are not removed,
corrosion (rust) will occur on metal components.
Your BMW authorized center can do this
anti-corrosion service for you.
Do not apply additional undercoating or
rust-proofing on or near the exhaust
manifold, exhaust pipes, catalytic converter or heat
shields. During driving, the substance used for
undercoating could overheat and cause a fire.
11
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