Mercedes M-Class W163

since 1997 of release

Repair and car operation



Mercedes W163
+ Mercedes-Benz Cars of a class M (W163)
+ Governing bodies and receptions of safe operation
+ Current leaving and service
+ Engine
+ Systems of cooling, heating and air conditioner
+ the Power supply system and production of the fulfilled gases
+ Systems of electric equipment of the engine
+ Manual box of gear shifting
+ Avtomaticheckaya transmission
+ Transmission line
+ Brake and auxiliary systems
+ Suspension bracket and steering
+ Body
- Onboard electric equipment
   General information and precautionary measures
   Search of causes of failures of electric equipment
   Safety locks - the general information
   Chain breakers - the general information
   The relay - the general information and check of serviceability of functioning
   Digital tire of data of CAN
   + Assembly blocks, elements of control systems
   + Dashboard, switches, traveling computer
   + Driving electromotors
   + Alarm and lighting devices, sensors of a rain and temperature of external air
   + Systems of additional safety (SRS)
   + Audiosystem
   + Schemes of electric connections
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General information and precautionary measures

Before starting service of components of systems of onboard electric equipment familiarize with requirements of safety regulations at work with electric devices!

The car is equipped with a 12-voltny onboard power supply system with grounding on a negative pole. Supply of electricity to lighting devices and other consumers is carried out from the storage battery of the lead-acid type which additional charge is made from the generator of an alternating current.

The description of procedures of repair and service of the electric components which are established on the car and not having the direct connection to operation of the engine is provided in the present Chapter. Information on service of such units as the storage battery, the ignition distributor, the generator and a starter is given in the Head of System of electric equipment of the engine, devoted to systems of electric equipment of the engine.

Before starting service of components of onboard electric equipment, in order to avoid receiving electric shock, or ignition as a result of short circuit, it is necessary to disconnect a negative wire from the battery. Regularly check a condition of plaits of electroconducting and reliability of their fastening in intermediate clamps, collars and bindings. Watch, that isolation of wires was not wiped at contact to the components located in the neighbourhood.

Models of cars considered in the real Management are equipped with system of additional safety (SRS). Before starting performance of any works near the block of a safety cushion, a steering column or the dashboard, disconnect SRS in order to avoid receiving traumas at its casual operation, - electroconducting of a chain of SRS is easy for distinguishing on yellow color of isolation!

If the stereosystem established on the car is equipped with a security code before disconnecting the battery make sure that have the correct combination for audiosystem input in action!