Mercedes of the S-class W202

1993-2000 of release

Repair and operation of the car

Mercedes W202
+ 1.2. General information
+ 2. Maintenance
+ 3. Engines
+ 4. Lubrication system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. System of ignition
+ 8. Fuel system
+ 9. Transmission
+ 10. Running gear
+ 11. Steering
+ 12. Brake system
+ 13. Body
- 14. Electric equipment
   14.1.2. Measuring devices
   14.1.3. Technology of measurements
   14.1.4. Checks of electric equipment
   14.1.5. Sound signal
   14.1.6. Replacements of safety locks
   - 14.1.7. Rechargeable battery Unattended rechargeable batteries Check of the rechargeable battery Self-discharge of the rechargeable battery Charging of the rechargeable battery Storage of the rechargeable battery Diagnostics of malfunctions of the rechargeable battery
   + 14.1.8. Generator
   + 14.1.9. Starter
   14.1.10. Traction relay
   + 14.1.11. System of lighting
   14.1.12. Devices
   14.1.13. Dashboard
   14.1.14. Glow lamps on the dashboard
   14.1.15. Light switch
   14.1.16. Radio receiver
   + 14.1.17. Antenna
   14.1.18. Loudspeakers
   + 14.1.19. Rubber brushes of screen wipers
   14.1.20. Windscreen washer jets
   14.1.21. The washing nozzles of headlights
   14.1.22. Screen wiper and its engine
   14.1.23. Protect the car
   14.1.24. Anticreeping "immunodeficiency"
   14.1.25. Why headlights grow dull
   14.1.26. Galogenka
+ 14.2. Electrical circuitries

14.1.7. Rechargeable battery


The rechargeable battery is on the right side under a trunk floor.


Some serially installed automobile radio receivers have coding. Anticreeping coding interferes with incompetent commissioning of the device if the system of electroproviding is interrupted. The system of electroproviding, for example, is interrupted at a detachment of wires from plugs of the rechargeable battery, at removal of the radio receiver or if the radio receiver safety lock fused. If the radio receiver is coded, before a detachment of wires from plugs of the rechargeable battery record a radio code. If the code is unknown, then only the auto repair shop of Mercedes can put into operation the automobile radio receiver again.

1. Bolts
2. Holder
3. Plug of a negative pole
4. Plug of a positive pole
5. Turboprovod for removal of the emitted gases
6. Protective cover of a positive pole
G1. Rechargeable battery


1. It is impossible to insert the ignition key.
2. Disconnect wires from plugs of the rechargeable battery, at first the wire (3) connecting a pole of the rechargeable battery (–) with the car case, then a positive wire (4) (+), for this purpose cast away a protective cover (6) up.
3. Remove from the rechargeable battery the pipeline (5) for removal of the emitted gases.
4. Unscrew and get bolts (1) to a fixing plate (2) on the basis of the rechargeable battery. The rechargeable battery on 100 A-h has only one bolt.
5. Take the rechargeable battery.

Rechargeable batteries contain harmful substances which should not get to household garbage. Upon purchase of the new rechargeable battery old return to the seller or hand over on points of warehousing of special waste.


1. Before installation clear to gloss of a pole of the rechargeable battery, the brush from a brass wire for this purpose approaches. For prevention of corrosion cover both poles with antiacid lubricant.
2. Install the rechargeable battery, get it on a fixing plate and hardly screw.
3. Pull over the rechargeable battery the pipeline for removal of the emitted gases.
4. Attach to plugs a positive wire to a positive pole (+), then negative (case) a wire to a negative pole.

Connect wires to the rechargeable battery only at the switched-off ignition, otherwise the actuation device of system of injection of fuel can be damaged. Because of the wrong connection of the battery there can be considerable damages to the generator and electric system.

Pay attention to perfect connections with the case of the car and pure contacts. High transitional resistance of contacts brings, especially at start-up, to an overload of electronic actuation devices and can become in an extreme case the reason of their failure.

5. Close a protective cover on a positive pole and record it.
6. Determine time on hours.
7. Enter an anticreeping code for radio (see subsection 14.1.16.).