Vehicle equipment and instruments Mercedes E-Class (W123)
Design and technical characteristics of electrical equipment
The electrical equipment is 12-volt, with negative terminals to ground. The battery is recharged by an alternator with a belt drive and a built-in voltage regulator....
The electrical equipment is 12-volt, with negative terminals to ground. The battery is recharged by an alternator with a belt drive and a built-in voltage regulator....
Fuses and relays
The fuses are located in the engine compartment on the right side of the body bulkhead. The various relays are located separately on the wiring harnesses. Fuses should...
The fuses are located in the engine compartment on the right side of the body bulkhead. The various relays are located separately on the wiring harnesses. Fuses should...
Removal and installation the combination switch
Guide pin for mating the combination switch connector (shown by arrow) 1. Disconnect the wire from the negative battery terminal. 2. Remove the lower instrument panel...
Guide pin for mating the combination switch connector (shown by arrow) 1. Disconnect the wire from the negative battery terminal. 2. Remove the lower instrument panel...
Removal and installation the interior door light switch
1. Open the door and remove the switch from the door post. 2. Pull the wires out to a length that they do not retract back into the rack, disconnect them from the...
1. Open the door and remove the switch from the door post. 2. Pull the wires out to a length that they do not retract back into the rack, disconnect them from the...
Removal and installation the light switch
1. Disconnect the wire from the negative battery terminal. 2. Pull out the switch button. 3. Remove the lower instrument panel shield. 4. Loosen the nut, remove the...
1. Disconnect the wire from the negative battery terminal. 2. Pull out the switch button. 3. Remove the lower instrument panel shield. 4. Loosen the nut, remove the...
Removal and installation instrument panel and console switches
1. Disconnect the wire from the negative battery terminal. 2. Remove the switch by pulling it towards you. 3. Pull out the connector and remove the switch. 4....
1. Disconnect the wire from the negative battery terminal. 2. Remove the switch by pulling it towards you. 3. Pull out the connector and remove the switch. 4....
Removal and installation the instrument cluster
Oil supply pipe connecting tip 1. Disconnect the wire from the negative battery terminal. 2. Remove the lower instrument panel shield. 3. Push out the instrument cluster...
Oil supply pipe connecting tip 1. Disconnect the wire from the negative battery terminal. 2. Remove the lower instrument panel shield. 3. Push out the instrument cluster...
Removal and installation the flexible speedometer drive shaft
1. Disconnect the speedometer flexible shaft from the instrument cluster. 2. Jack up the front of the car and place it on stands (support). Apply the parking brake. 3....
1. Disconnect the speedometer flexible shaft from the instrument cluster. 2. Jack up the front of the car and place it on stands (support). Apply the parking brake. 3....
Removal and installation instrument cluster indicators
1. Remove the instrument cluster. Watch 1. Remove the four Phillips head screws and remove the clock from the back of the instrument cluster. 2. Installation is carried...
1. Remove the instrument cluster. Watch 1. Remove the four Phillips head screws and remove the clock from the back of the instrument cluster. 2. Installation is carried...
Headlight/Fog Light Adjustment
In case of urgent need, the high beam headlights are set using the adjustment screws provided for this purpose, subject to the conditions listed below. Headlight...
In case of urgent need, the high beam headlights are set using the adjustment screws provided for this purpose, subject to the conditions listed below. Headlight...
Removal and installation of headlights and their lamps
1. To remove a simple or fog lamp bulb, lift the hood and open the rear cover of the headlight unit. 2. Disconnect the wires from the lamp, then release the spring latch...
1. To remove a simple or fog lamp bulb, lift the hood and open the rear cover of the headlight unit. 2. Disconnect the wires from the lamp, then release the spring latch...
Replacing lamps
Front side marker lights 1. Open the rear cover of the headlight unit. 2. Remove the lamp holder, press on the bulb, turn it and remove the lamp. Turn signal lamp 1....
Front side marker lights 1. Open the rear cover of the headlight unit. 2. Remove the lamp holder, press on the bulb, turn it and remove the lamp. Turn signal lamp 1....
Replacing Windshield Wiper Blades
1. Lift the wiper arm, press the plastic latch and remove the blade from the arm. 2. If necessary, the brush leash can be removed separately by sliding it off the brush...
1. Lift the wiper arm, press the plastic latch and remove the blade from the arm. 2. If necessary, the brush leash can be removed separately by sliding it off the brush...
Removal and installation the windshield wiper arm
1. Remove the wiper blades. 2. Lift the hinge caps (with the lever already raised), then lower the lever with the hinge cap towards the windshield. 3. Remove the nut and...
1. Remove the wiper blades. 2. Lift the hinge caps (with the lever already raised), then lower the lever with the hinge cap towards the windshield. 3. Remove the nut and...
Removal and installation windshield wiper drive rods
1. Remove the windshield wiper drive. 2. Remove the drive rods, then unscrew the fastener and remove the drive shafts from the body bulkhead. 3. Installation is carried...
1. Remove the windshield wiper drive. 2. Remove the drive rods, then unscrew the fastener and remove the drive shafts from the body bulkhead. 3. Installation is carried...
Removal and installation the headlight washer drive
1. Remove the wiper blades and arms (one nut). 2. Remove the headlight unit. 3. Disconnect the wire from the negative terminal of the battery. 4. Disconnect the wiring...
1. Remove the wiper blades and arms (one nut). 2. Remove the headlight unit. 3. Disconnect the wire from the negative terminal of the battery. 4. Disconnect the wiring...
Windshield washer
The windshield washer consists of a fluid reservoir located in the engine compartment, an electric pump, a control switch, jets and connecting pipes. Do not use plain...
The windshield washer consists of a fluid reservoir located in the engine compartment, an electric pump, a control switch, jets and connecting pipes. Do not use plain...
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- General information
- Vehicle description
- Working conditions and tools
- Car care
- Diesel engines
- Engine repair
- Lubrication system
- Cooling system
- Injection system
- Supply system
- Exhaust system
- Gasoline engines
- Engine repair
- Lubrication system
- Cooling system
- Control system
- Power and exhaust system
- Transmission
- Clutch
- Mechanical gearbox
- Automatic gearbox
- Drive shafts
- Chassis
- Car suspension
- Steering
- Tires and wheels
- Brake system
- Body
- Exterior (external elements)
- Interior (internal elements)
- Doors and windows
- Heating and ventilation
- Electrical equipment
- Equipment and devices
- Power devices
- Lighting and signaling
- Electrical circuits
- General information
- Governing bodies
- Driving and operation
- Weekly care
- Maintenance (gasoline)
- Maintenance (diesel)
- Troubleshooting
- Power unit
- I4 petrol engine
- V6 petrol engine (SOHC)
- V6 petrol engine (DOHC)
- Diesel engines
- Engine overhaul
- Cooling system
- Heating and ventilation
- Fuel system (carburetor)
- Injection system «Bosch CIS-E»
- Injection system «Bosch HFM»
- Diesel fuel system
- Supply system
- Starting and charging system
- Ignition system (I4)
- Ignition system (V6)
- Preheating
- Transmission
- Clutch
- Mechanical gearbox
- Automatic gearbox
- Drive shafts
- Chassis
- Brake system
- Car suspension
- Steering
- Body
- Exterior (external elements)
- Interior (internal elements)
- Doors, locks and windows
- Electrical equipment
- Equipment and devices
- Switches
- Headlights and lighting
- Electrical circuits
- General information
- Introduction to the guide
- Power unit
- Engine device
- Repair M102 engines
- Repair M110 and M123 engines
- Cooling and lubrication (M102)
- Cooling (M110 and M123)
- Ignition system
- Power system «Stromberg»
- Power system «Solex 4A1»
- Fuel injection «K-Jetronic»
- Fuel injection «L-Jetronic»
- Transmission
- Clutch
- Mechanical gearbox
- Automatic gearbox
- Cardan and rear axle
- Chassis
- Front suspension
- Rear suspension
- Steering
- Brake system
- Body
- Exterior (external elements)
- Interior (internal elements)
- Doors, locks and windows
- Electrical equipment
- Equipment and devices
- Power devices
- Electrical circuits

