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Vehicle care151
Drain filter of residual water at every
engine oil change.
Place a container underneath the
filter housing. Loosen the knurled
screw on the lower part of the filter by approx. one turn, to drain off the
water.
The filter is drained as soon as water-
free diesel fuel emerges. Retighten
the screw.
Check diesel fuel filter at shorter
intervals if the vehicle is subjected to
extreme operating conditions.
Diesel fuel system bleeding
If the fuel tank has been run dry, it will be necessary to air vent or bleed the
diesel fuel system.
Refuel then proceed as follows:
With ignition key
● Switch on the ignition (key to position 2) for 5 seconds at a
time.
● Switch off ignition (key to position
1 ) for 3 seconds.
● Repeat this process multiple
times.
● Start the engine (key to position 3) then switch off (key to position
0 ).
Ignition switch positions 3 114.
With power button
● Insert the electronic key in the card reader.
● Press START/STOP without
pressing any of the pedals.
● Wait a few minutes before starting engine.
Power button 3 114.
Page 163 of 209

Vehicle care161No.Circuit1Adblue injection battery2Vehicle battery (with electronic
key system)3APC battery backup (with elec‐
tronic key system)4Heating and ventilation system5Adaptations6Adaptations7Heating and ventilation system8Additional heating and ventila‐
tion / air conditioning system9Supplementary heating and
ventilation system10Electric exterior mirrors / addi‐
tional adaptations11Heated exterior mirrors12Radio / multimedia / electric
exterior mirrors / diagnostic
socket13Multimedia / trailer hitchNo.Circuit14Courtesy lights / battery
discharge protection15Fuel injection system / tyre pres‐ sure monitoring system / elec‐
tronic key system16Hazard warning flashers / turn
and lane-change signals17Central locking18Left-hand high beam / right-
hand low beam / tail lights / left- hand daytime running light19Front fog lights / rear fog lights /
number plate lighting20Alarm / horn / lighting / wiper21Instrument cluster22Light switch23Rear window wiper / wind‐
screen washer pump / horn24APC general battery25Reversing lightsNo.Circuit26Brake switch27Fuel injection / starter28Airbag / steering column lock29Passenger power window30Power steering31Brake lights32APC battery backup (with elec‐
tronic key system)33Service display34Cigarette lighter / power outlet35Right-hand high beam / left-
hand low beam / sidelights /
right-hand daytime running light36Brake lights / ABS / immobiliser37Interior lighting / air conditioning38Starting with electronic key
system39Rear window wiper40Warning chimes
Page 173 of 209

Vehicle care171Notice
The driving characteristics of the
repaired tyre is severely affected, therefore have this tyre replaced.
If unusual noise is heard or the
compressor becomes hot, turn
compressor off for at least
30 minutes.
Pay attention to storage information
and expiry date on sealant bottle. Its
sealing capability is not guaranteed
after this time.
Replace the used sealant bottle. Dispose of the sealant bottle as
prescribed by applicable laws.
Wheel changing
Some vehicles are equipped with a
tyre repair kit instead of a spare wheel 3 168.
Make the following preparations and
observe the following information:
● Park the vehicle on a level, firm and non-slippery surface. The
front wheels must be in the
straight-ahead position.
● Apply the parking brake and engage first gear or reverse gear.● Remove the spare wheel 3 172.
● Never change more than one wheel at a time.
● Use the jack only to change wheels in case of puncture, not
for a seasonal winter or summer
tyre change.
● If the ground on which the vehicle
is standing is soft, a solid board
(max. 1 cm thick) should be
placed under the jack.
● Take heavy objects out of the vehicle before jacking up.
● No people or animals may be in the vehicle when it is jacked-up.
● Never crawl under a jacked-up vehicle.
● Do not start the engine when the vehicle is raised on the jack.
● Clean wheel bolts/nuts and thread with a clean cloth before
mounting the wheel.9 Warning
Do not grease wheel bolt, wheel
nut and wheel nut cone.
1. Remove the wheel cover (using the hook supplied). Vehicle tools
3 162.
2. Loosen each of the wheel bolts by
half a turn using the wheel
wrench. Ensure the wrench
locates securely. The wrench
should turn anticlockwise to
loosen the bolts. Invert the wrench if necessary.