2002 MERCEDES-BENZ ML320 key battery

279 Towing
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index ML 55 AMG and vehicles with optional sport package.
The rear towing eye is located behind the right side
cover (1) in the bumper panel.
3Cover
4Tow i n g eye , r e a rCover removal:
Grip cover at bottom and securely pull out.
Cover installation:
Engage cover and press in securely.
We recommend that the vehicle be transported using
flat bed equipment. This method is preferable to other
types of towing.
The vehicle may be towed with all wheels on the ground
and the selector lever in position “N” for distances up to
30 miles (50 km) and at a speed not to exceed 30 mph
(50 km / h). The key must be in steering lock position 2.
Note:
The steering lock cannot be locked or unlocked and the
selector lever remains in position “P” if the battery is
disconnected or discharged (see page 273). See
page 281 for transmission selector lever, manually
unlocking.
Wa r n i n g !
In order to avoid possible serious burns or injury,
use extreme caution when removing the cover,
because the rear exhaust pipe is extremely hot.

292 Remote control
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Remote control battery replacement
Changing batteries
Unfold master key from holder by pressing key release
button. Pull off battery cover (1).
Change batteries, inserting new ones with (+) side
facing up.
Press battery cover onto housing until locked in place.Notes:
To assure proper operation of the remote control, push
each button. Repeat battery installation, if remote
control does not function correctly.
If the remote control does not function correctly after
repeating battery installation, the system may have to be
resynchronized, see below.

293 Remote control
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Synchronizing remote control
If the remote control does not function correctly and the
batteries are in order, the system may have to be
resynchronized.
Turn key in steering lock to position 2, then to
position 0 and remove.
Within 10 seconds, push and hold button‹ while
pushing buttonΠfive times.
Release the button, and press‹, Œ orŠ once.
Check all functions. The remote control should once
again be operational.
Note:
If it is not possible to resynchronize the remote control,
have the system checked at your authorized Mercedes-
Benz Light Truck Center.Important!
Batteries contain materials that can harm the
environment if disposed of improperly. Recycling of
batteries is the preferred method of disposal. For
disposal, please follow manufacturer’s recommendation
on battery package.
Replacement Battery:
Lithium, type CR 2025 or equivalent.

331 Index
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex Rear seat head restraints .............................................. 143
Adjusting .................................................................... 143
Removal ...................................................................... 143
Rear view mirrors
Exterior ......................................................................... 77
Inside ............................................................................ 75
Rear window defroster .................................................. 121
Rear window wiper/washer ......................................... 106
Remote control ................................................................. 24
Battery replacement ................................................. 292
Changing batteries ................................................... 292
Operation ..................................................................... 26
Synchronizing remote control ................................ 293
Removable cargo floor plates ....................................... 147
Replacement keys ............................................................ 25
Replacing bulbs .............................................................. 282
Replacing wiper blade insert .......................................295
Reporting safety defects ................................................. 16
Residual engine heat utilization (REST) .....................117
Roadside assistance ......................................................... 10
Roadside assistance call
See Tele Aid ............................................................... 166
Roof rack .........................................................................296
SSafety guidelines for the seat belt, emergency
tensioning retractor and airbag ................................66
Screwdriver .................................................................... 259
Seat belt warning lamp ................................................ 245
Seat belts ...........................................................................48
Fastening ......................................................................50
Seat belt nonusage warning system .........................49
Unfastening .................................................................. 52
Warning lamp ........................................................... 245
Seat belts and integrated restraint system ..................48
Seat bench ....................................................................... 139
Seats, folding (Third row seats) ................................... 144
Seats, front ........................................................................ 38
Heated seats ................................................................. 46
Manual seats ................................................................40
Memory function .........................................................43
Power seats .................................................................. 41
Service indicator
See Flexible service system (FSS) ............................ 94
Side marker lamp .......................................................... 285
Sliding/pop-up roof ........................................................126
Emergency operation .............................................. 294
Express opening ........................................................127
Synchronizing .......................................................... 294