Page 292 of 341
289 Exterior lamps
Technical
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index Taillamp assemblies
Open trunk lid.
Swing cover aside.
1Turn signal lamp (21 W / 24 cp bulb)
2Stop, tail and parking lamp (21 / 4 W bulb)
3Tail, parking and side marker lamp (5 W / 4 cp bulb)4Driver’s side:
Rear fog lamp (21 W / 32 cp bulb)
5Backup lamp (21 W / 32 cp bulb)
Twist bulb socket counterclockwise and pull out. Push 
bulb into socket, turn counterclockwise and remove.
Insert new bulb in socket, push in and twist clockwise. 
Reinstall bulb socket.
P82.10-2204-26
1
2
3 
         
        
        
     
        
        Page 293 of 341
290 Exterior lamps
Technical
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index
Side marker lamp, front
Side marker lamp, front (5 W / 4 cp bulb)
From inside wheel house (arrow) reach behind side 
marker lamp and press tab. Remove lamp from bumper 
and take out bulb.High mounted stop lamp,
Additional turn signals on the exterior mirror
The high mounted stop lamp (3rd brake lamp), and the 
additional turn signals on the exterior mirrors are 
equipped with LED’s.
Have the system checked at an authorized 
Mercedes-Benz Center if a malfunction occurs. 
         
        
        
     
        
        Page 294 of 341
291 Electronic main key
Technical
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index Changing batteries in the electronic main key
1Transmit buttons
2Lamp for battery check and function control
Checking batteries
If one of the transmit buttons (1) is pressed, the battery 
check lamp (2) lights up briefly – indicating that the 
batteries are in order.
Change batteries if the battery check lamp (2) does not 
light up briefly.Changing batteries
Move locking tab (3) in direction of right arrow and 
remove mechanical key (4, left arrow).
P80.20-2201-26
1
2
P80.35-2029-26
4
3 
         
        
        
     
        
        Page 295 of 341
292 Electronic main key
Technical
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index
Insert mechanical key (4) in side opening (5) to open 
latch. Press briefly (do not use mechanical key as lever) 
to release battery compartment.
Remove mechanical key from side opening.
Carefully remove battery compartment in direction of 
arrow (6).Change batteries (7), inserting new ones under contact 
spring (8) with plus (+) side facing up.
Return battery compartment into housing until locked 
in place and slide mechanical key back into electronic 
main key.
P80.35-2025-26
5
4
6
P80.35-2027-26
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        Page 296 of 341

293 Electronic main key
Technical
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index 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.
Synchronizing remote control 
The remote control may have to be resynchronized, if 
the vehicle cannot be locked or unlocked.
To synchronize insert electronic key in starter switch.
The remote control should once again be operational.Emergency engine shut-down
If the engine can no longer be stopped using the 
electronic key, the engine can be turned off by removing 
two fuses.
For easy removal of fuses use the fuse extractor 
(supplied with vehicle tool kit) to pull out the fuses 
marked on the fuse chart as “ENGINE EMERGENCY 
OFF”.
The fuse chart is also located in the vehicle tool kit, 
seepage264.
For fuses see page 255. 
         
        
        
     
        
        Page 297 of 341
294 Rear seat cushion
Technical
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index
Rear seat cushionRemoval:
Pull locking tabs up (on left and right side of seat) and 
lift seat at the front.
Installation:
Guide seat belt buckles through openings in seat 
cushion. Slide rear edge of cushion under the backrest 
as far as it will go, and push front of cushion down until 
it locks in place.
Caution!
Watch out for sharp edges when removing or installing 
the rear seat cushion, and make sure that it is securely 
locked in place again, to prevent personal injury.
P91.12-2193-26 
         
        
        
     
        
        Page 298 of 341
295 Emergency operation of sliding / pop-up roof
Technical
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index Emergency operation of sliding / pop-up roof
The sliding / pop-up roof can be opened or closed 
manually should an electrical malfunction occur.
The sliding/pop-up roof drive is located behind the lens 
of the left interior lamp between the sun visors.
1. Pry off lens (1) by using a screw driver.
2. Remove cover (2).
3. Obtain crank (3) (supplied with vehicle) and insert 
it through hole.To slide the roof closed or to raise the roof at the rear: 
turn crank clockwise.
To slide the roof open or to lower the roof at the rear: 
turn crank counterclockwise.
Note:
Push crank upward while turning it, to disengage the 
electric motor.
1
P77.20-2037-26 
         
        
        
     
        
        Page 299 of 341
296 Manual release for fuel filler flap
Technical
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index
Manual release for fuel filler flap
The manual release knob is located behind the right 
side trunk panel.
In case the central locking system does not release the 
fuel filler flap, pull the manual release knob while 
simultaneously opening the fuel filler f lap.Replacing wiper blade insert
For safety reasons, remove electronic key from steering 
lock before replacing the wiper blade, otherwise the 
motor can suddenly turn on and cause injury.
Notes:
Do not open engine hood with wiper arm folded forward.
Do not allow the wiper arm to contact the windshield 
glass without a wiper blade inserted. The glass may be 
scratched or broken.
Make certain that the wiper blade is properly installed. 
An improperly installed wiper blade may cause 
windshield damage.
P80.20-2090-26