Page 36 of 317

33 Central locking system
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Notes:
If doors are unlocked with the central locking switch 
after activating the automatic central locking, and 
neither door is opened, then the doors remain unlocked 
even at vehicle speeds of approximately 9 mph 
(15 km / h) or more.
If a door is opened from the inside at speeds of 
approximately 9mph (15km/h) or less with the 
automatic central locking activated, the door will again 
be automatically locked at speeds of approximately 
9 mph (15 km / h) or more.
Important!
When towing the vehicle, or with the vehicle on a 
dynamometer test stand, please, note the following:
With the engine running, the vehicle doors will lock if 
the left front wheel spins at vehicle speeds of 
approximately 9 mph (15 km / h) or more.
To prevent vehicle door locks from locking, deactivate 
the automatic central locking.Emergency unlocking in case of accident
The doors unlock automatically a short time after an 
accident in which an airbag or emergency tensioning 
retractor deploys (this is intended to aid rescue and 
exit). However, the key must still be in the steering lock 
position 1 or 2.
Additionally the hazard warning flashers turn on 
automatically and the interior lights switch on for 
approximately 30 minutes. 
     
        
        Page 224 of 317

221 Malfunction and indicator lamps
Te ch n ica l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car care Index Electronic stability program (ESP)/Electronic 
traction system (4-ETS+) — warning lamp
The yellow warning lamp in the 
speedometer dial comes on with the key in 
steering lock position 2. It should go out 
with engine running.
See page 203 for 4-ETS+ and page 205 for ESP if the 
warning lamp lights up or flashes when the vehicle is 
moving.
BAS/ESP malfunction indicator lamp
The malfunction indicator lamp for the ESP 
is combined with that of the BAS.
The yellow BAS / ESP malfunction indicator 
lamp in the instrument cluster comes on with the key in 
steering lock position 2. It should go out with the engine 
running.
If the BAS / ESP malfunction indicator lamp remains 
illuminated with the engine running, see page 199 for 
BAS and page 205 for ESP.4-ETS+ malfunction indicator lamp
The yellow ETS malfunction indicator lamp 
in the instrument cluster comes on with the 
key in steering lock position 2. It should go 
out with the engine running.
If the ETS malfunction indicator lamp remains 
illuminated with the engine running a malfunction has 
been detected, see page 203 for 4-ETS+.
LOW RANGE indicator lamp
The yellow LOW RANGE indicator lamp in 
the instrument cluster comes on with the 
key in steering lock position 2. With the 
LOW RANGE mode deactivated it should go out with the 
engine running.
With the LOW RANGE mode activated the LOW RANGE 
indicator lamp is illuminated continuously.
If the indicator lamp blinks fast, one or more switching 
conditions were not observed, or the LOW RANGE mode 
is defective, see page 209 for LOW RANGE mode.
BAS
ESP
ETSLOW
RANGE 
     
        
        Page 257 of 317

254 Jump starting
Te ch n ica l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index
Proceed as follows:
1. Position the vehicle with the charged battery so that 
the jumper cables will reach, but never let the 
vehicles touch. Make sure the jumper cables do not 
have loose or missing insulation.
2. On both vehicles:
•Turn off engine and all lights and accessories, 
except hazard warning flashers or work lights.
•Apply parking brake and shift selector lever to 
position “P”.
Important!
3. Clamp one end of the first jumper cable to the 
positive (+) under hood terminal of the discharged 
battery and the other end to the positive (+) terminal 
of the charged battery. Make sure the cable clamps 
do not touch any other metal parts.
4. Clamp one end of the second jumper cable to the 
grounded negative (–) terminal of the charged 
battery and the final connection to the negative (–) 
terminal of the discharged battery.Important!
5. Start engine of the vehicle with the charged battery 
and run at high idle. Make sure the cables are not 
on or near pulleys, fans, or other parts that move 
when the engine is started. Allow the discharged 
battery to charge for a few minutes. Start engine of 
the disabled vehicle in the usual manner.
6. After the engine has started, remove jumper cables 
by exactly reversing the above installation 
sequence, starting with the last connection made 
first. When removing each clamp, make sure that it 
does not touch any other metal while the other end 
is still attached.
Notes:
If engine does not run after several unsuccessful 
starting attempts, have it checked at the nearest 
authorized Mercedes-Benz Light Truck Center.
Excessive unburned fuel may damage the catalytic 
converter.