|
| |
Electrical system
Notes on changing bulbs
Bulbs and lights are essential for vehicle safety. You must therefore ensure that all bulbs are functioning at all times.
Bulbs have a limited service life.
Mercedes-Benz recommends, that when a dipped-beam headlamp or main-beam headlamp bulb fails that the corresponding bulb in the other headlamp is replaced at the same time. Mercedes-Benz recommends that you use Mercedes-Benz longlife bulbs for this purpose.
 | Risk of injury |
|
Observe the following notes concerning the handling of bulbs:
-
Bulbs can become very hot. There is a risk of burns. You must therefore allow them to cool completely before changing them.
-
To avoid injuries, always wear non-slip gloves and safety goggles when replacing bulbs.
-
Do not use a bulb if it has been dropped or if its glass has been scratched. The bulb could explode. You could be injured by the shards of glass from a broken bulb.
-
Keep bulbs out of reach of children.
-
Only fit bulbs in enclosed lamps which have been designed for them and only use replacement bulbs of the same type and with the appropriate voltage.
-
Dirt on the glass bulb reduces the operating life of the bulb. Do not hold the glass bulb with your bare hands. If necessary, clean the glass bulb with alcohol or spirit while it is cold and wipe with a lint-free cloth.
-
Protect bulbs from moisture when in use and do not allow them to come into contact with liquids.
-
Where possible, only have defective bulbs changed at a qualified specialist workshop which has the necessary specialist knowledge and tools for the work required. Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose.
All work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.
|
Replacing bulbs
Observe the following:
 |
Switch off the lighting before replacing bulbs to prevent a short circuit.
|
| |
Only touch new bulbs with a clean, lint-free cloth - never with wet or oily fingers.
|
| |
Check contacts for corrosion and clean them if necessary.
|
| |
Check that all seals are sitting correctly. Replace damaged seals.
|
| |
If the new bulb still does not light up, consult a qualified specialist workshop, e.g. a Mercedes-Benz Service Centre.
|
Headlamps
 |
 | Plastic cover |
 | Side lamp |
 | Dipped-beam headlamp |
 | Main-beam headlamp |
|
Main-beam/dipped-beam headlamps
Side lamp
| |
Disconnect the cable connector.
|
| |
Pull out the bulb holder and change the bulb for side lamp .
|
Turn signal lamp, front
 |
| Fastening screw |
| Bulb holder |
|
Side-mounted turn signal lamps
Perimeter lamp/side marker lamp
 |
| Fastening screw |
| Lens |
| Bulb |
|
Side marker lamps
 |
| Cable connector |
| Side marker lamp |
|
In the case of a defective LED light, the entire side marker lamp must be replaced.
Rear lamp cluster
6-chamber rear lamp cluster
6-chamber rear lamp cluster, left
 |
| Fastening screws |
| Perimeter lamp/side marker lamp |
| Turn signal lamp |
| Brake lamp |
 | Tail lamp |
 | Reversing lamp |
 | Rear foglamp |
 | Licence plate lamp |
|
6-chamber rear lamp cluster, right
4-chamber rear lamp cluster
4-chamber rear lamp cluster, left
 |
| Fastening screws |
| Turn signal lamp |
| Brake lamp |
| Tail lamp |
| Rear foglamp |
| Licence plate lamp |
| Reversing lamp |
|
4-chamber rear lamp cluster, right
Perimeter lamp, front
Entry lamp
Interior lamp
 |
| Lens |
| Bulb |
| Nightlight bulb |
|
Fuses
The fuse box is located in the electrical equipment compartment behind the driver's seat.
| Risk of fire |
|
Do not fit fuses with a higher amperage than specified. This would result in damage to the electrical system or even a fire in the electrical system.
Only use fuses of the specified amperage and do not bridge or repair fuses. Do not replace a fuse until the cause of the malfunction has been traced and rectified.
|
 |
| Locking screws |
|
| |
Loosen locking screws until the electrical equipment compartment cover can be removed.
|
| |
Tilt the electrical equipment compartment cover upwards and remove it.
|
Checking and replacing
 |
| Spare fuses |
| Fuse extractor |
| LED |
| Test socket |
|
The individual electrical circuits are protected by safety fuses or automatic circuit-breakers.
| |
If an electrical circuit failure occurs, switch off electrical consumers and check the fuses.
|
A function test can be carried out on fuses by inserting them into test socket in the fuse box.
Automatic circuit-breaker
If the automatic circuit-breaker is triggered  :
| |
In the event of a circuit failure, switch off consumers and check the automatic circuit-breaker.
|
Check the automatic circuit-breaker:
Fuse layout
|
A
|
Consumer
| |
|
F1
|
Rear foglamp, front foglamp
|
10A
|
|
F2
|
Instrument cluster/switch lighting, battery isolating switch (ADR/GGVSE)
|
10A
|
|
F3
|
Additional radiator for power take-off (terminal 30)
|
20A
|
|
F4
|
Radio, LSVA , frequent-stop brake (terminal 30)
|
10A
|
|
F5
|
Working-area lamp
|
10A
|
|
F6
|
Auxiliary headlamp
|
10A
|
|
F7
|
Enhanced permanent+ signal
|
15A
|
|
F8
|
Exterior mirror heating
|
10A
|
|
F9
|
Driver's seat position adjustment (terminal 30)
|
10A
|
|
F10
|
Diagnostic socket, instruments, auxiliary heating preselection timer, tachograph (terminal 30)
|
10A
|
|
F11
|
Heater for compressed-air drier, 15-pin trailer socket (terminal 30)
|
20A
|
|
F12
|
24V/12V voltage transformer
|
20A
|
|
F13
|
Interior lighting, doorway lamp
|
10A
|
|
F14
|
Unassigned
|
10A
|
|
F15
|
Heater control: air-conditioning system, fresh air/air recirculation
|
10A
|
|
F16
|
Power take-off, operating speed governor, reverse gear lock, shift lock
|
10A
|
|
F17
|
Heater blower
|
20A
|
|
Auxiliary heating
|
10A
|
|
F18
|
Radio, telephone, monitor (terminal 15R)
|
10A
|
|
F19
|
Cigarette lighter
|
10A
|
|
F20
|
Power window switch (co-driver's door)
|
15A
|
|
F21
|
Power window switch (driver's door), electric roller sunblind
|
15A
|
|
F22
|
Hazard warning lamps
|
10A
|
|
F23
|
Right dipped-beam headlamp
|
10A
|
|
F24
|
Left dipped-beam headlamp
|
10A
|
|
F25
|
Right main-beam headlamp
|
10A
|
|
F26
|
Left main-beam headlamp, main-beam indicator lamp
|
10A
|
|
F27
|
Parking lamp, tail lamp, licence plate lamp, perimeter lamp and side marker lamp (left)
|
10A
|
|
F28
|
Parking lamp, tail lamp, licence plate lamp, perimeter lamp and side marker lamp (right)
|
10A
|
|
F29
|
Automatic transmission electronics (terminal 15)
|
15A
|
|
F30
|
Pump-line-nozzle electronics (terminal 15), ADR/GGVSE: relay for drive control (FR)/pump-line-nozzle electronics (terminal 15)
|
10A
|
|
F31
|
Exterior mirror adjustment
|
10A
|
|
F32
|
Folding door
|
10A
|
|
F33
|
Indicator lamps
|
10A
|
|
F34
|
Brake lamp, reversing lamp
|
10A
|
|
F35
|
Condensation sensor, ABS/EPB trailer socket (terminal 15)
|
10A
|
|
F36
|
Basic wiring for body control (terminal 15)
|
20A
|
|
F37
|
Windscreen washer system
|
10A
|
|
F38
|
Instruments, tachograph, LSVA (terminal 15)
|
10A
|
|
F39
|
Horn, air horn, diagnostic socket (terminal 15)
|
10A
|
|
F40
|
Differential lock
|
10A
|
|
F41
|
Driver's seat position adjustment (terminal 15)
|
10A
|
|
K1-K7
|
Relays
| |
|
D1-D10
|
Diodes
| |
|
A1
|
Consumer
| |
|
F1
|
Rotating beacon lamps
|
10A
|
|
F2
|
12V basic wiring: radio, telephone, two-way radio, monitor (terminal 30)
|
10A
|
|
F3
|
Seat heating (driver's seat)
|
10A
|
|
F4
|
Automatic transmission electronics (terminal 30)
|
10A
|
|
F5
|
Auxiliary heating
|
20A
|
|
F6
|
Auxiliary heating
|
20A
|
|
F7
|
ABS/EPB trailer socket
|
20A
|
|
F8
|
Natural gas engine: ignition module (terminal 15)
|
15A
|
|
F9
|
Natural gas engine: electromagnetic shutoff valve (terminal 15)
|
10A
|
|
F10
|
Telma retarder (terminal permanent+)
|
10A
|
|
F11
|
Alternator (terminal 15)
|
10A
|
|
F12
|
Unassigned
| |
|
F13
|
Unassigned
| |
|
F14
|
Unassigned
| |
|
