Vehicle equipment and instruments Mercedes C-Class (W203)

General description of on-board electrical equipment
Vehicles of this make are equipped with a 12 V negative grounded electrical system. All lighting devices and electrical units are powered by a lead-acid battery,...

Electrical Equipment Specifications
Note: Individual characteristics are also given in the text of the Chapter and, if their implementation is mandatory, are highlighted in bold. General parameters...

Diagnostics of faults of on-board electrical equipment
The procedures and codes for diagnostics of electronic control systems are discussed in Chapter Engine electrical equipment . A typical electrical circuit may include an...

Checking the windshield wiper motor
The windshield wiper motor is located in the water collection compartment under the windshield. To check it, you need to remove the corresponding cover. Terminal...

Checking the heated rear window
When the rear window heating is turned on, the field with visible wire lines should be cleared of covering or snow after a while. 1. If there are any faults, first check...

Relays and Fuses — Location and Replacement
Most of the car's electrical consumers are protected by fuses. Individual components of the lighting system, with the exception of the brake lights, are protected by...

Ignition Key/Remote Control Battery Replacement
Removal 1. Move the release button (1) in the direction of the arrow and remove the emergency key (2) from the ignition switch. 2. Press the emergency key (1) into the...

Removal and installation the windshield wiper motor
Removal 1. Open the hood. 2. Disconnect the negative (-) battery cable with the ignition off. The cabin air filter box must be removed first. Warning! Before...

Removal and installation the rear window wiper motor
Station wagon Removal 1. Disconnect the negative (-) battery cable with the ignition off. The cabin air filter box must be removed first. Warning! Before disconnecting...

Removal and installation the water tank and pump motor
Removal 1. Open the hood. 2. Disconnect the negative (-) battery cable with the ignition off. The cabin air filter box must be removed first. Warning! Before...

Removal and installation the rain sensor
Note: The rain sensor is mounted on the windshield, at the height of the rearview mirror. It controls the wiper intervals. It must be installed with extreme care to...

Removal and installation the horn
Removal 1. Open the hood. 2. Disconnect the negative (-) battery cable with the ignition off. The cabin air filter box must be removed first. Warning! Before...

Removal and installation parking sensors
Removal 1. Remove the protective strip (1) on the bumper, refer to Section Removal and installation the protective strip on the bumper . 2. Disconnect the connector at...

Removal and installation the outside air temperature sensor
The temperature sensor is installed next to the fog lamp. Depending on the version, it is located either on the driver's side or the front passenger's side. Removal 1....

Removal and installation the instrument panel
Removal 1. Disconnect the negative (-) battery cable with the ignition off. The cabin air filter box must be removed first. Before disconnecting the cable, find out the...

Removal and installation the steering column switch
The steering column switch switches the following devices: low beam, high beam, direction indicators and windshield wipers. Removal 1. Set the wheels straight. 2....

Removal and installation the front ceiling light switch
The front ceiling light contains switches for the interior light, reading light and sliding roof panel. Removal 1. Disconnect the negative (-) battery cable with the...

Removal and installation a group of switches to the left of the control panel
In the switch group on the left, next to the steering wheel, various light switches are installed, as well as a switch for adjusting the outside rearview mirror. If any...

Removal and installation the center console switch
Upper group of switches Under the central ventilation deflector there is a switch for the hazard warning lights, as well as switches for various purposes, such as seat...

Removal and installation switches in doors
Upper Switch Group/Front Door In the switch group next to the door handle, depending on the equipment, the switch for the electric seat and steering wheel adjustment is...

Removal and installation interior door light switches
The doors are equipped with switches that are used to turn the interior lighting devices on and off. Removal 1. Disconnect the negative (-) battery cable with the...

Removal and installation parking assistant warning signs
Front warning indicator Removal 1. Disconnect the negative (-) battery cable with the ignition off. The cabin air filter box must be removed first. Before disconnecting...

Removal and installation the cigarette lighter
Removal 1. Disconnect the negative (-) battery cable with the ignition off. The cabin air filter box must be removed first. Warning! Before disconnecting the cable, find...

Removal and installation the radio
Attention! Before removing the radio receiver, it is necessary to find out and write down its anti-theft code. Otherwise, the radio receiver can only be switched on at a...

Removal and installation the loudspeaker
Loudspeaker in the door Removal 1. Disconnect the negative (-) battery cable with the ignition off. The cabin air filter box must be removed first. Warning! Before...

Digital data bus CAN
Data exchange via CAN bus B - Sensor 1; CAN - Data Bus; M - Executive elements I - III (servomechanisms); N - Control units (controllers) I-V Basic information The...

Single Lock — General Information
Elements of a single lock 1 - Unlocking/locking; 2 - Access, access code; 3 - Choice, global; 4 - Unlocking/locking drive motors; 5 - Switching on the direction...

Installation of additional electrical and electronic devices
Additional electrical or electronic devices that may influence the driver's control of the vehicle must be type approved and marked with the symbol e . Permission is...

Purpose and location of electrical connectors
Refer to the following illustrations. The designations of the electrical connectors are listed in alphabetical order in Section Electrical equipment diagrams .

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TEXTHTMLBB Code

190 (W201) (1982-1993)