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
   + 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

14.1.10. Traction relay


At malfunction of the traction relay the gear wheel in a starter is not attracted to a gear rim of a flywheel. Because of it the starter cannot turn an engine shaft. This defect meets more often than the engine of a starter fails.

Check in the established state

1. Switch off transfer, install the gear shifting lever in neutral situation.
2. Quickly to a zashuntiruyta an auxiliary wire on a starter the plug 30 (a thick positive wire) and the plug 50 (the thin wire going to the lock switch of ignition and devices), the gear wheel of the drive of a starter has to move quickly forward and put a starter in action. If it does not occur, unscrew a starter and replace the relay.


1. Remove a starter and repeat its check in the removed situation with use of the rechargeable battery. As the bringing line to the plug 50 of a starter the wire is suitable the rechargeable battery for connection of a starter to auxiliary (out of the car). If the gear wheel quickly moves forward, without starting a starter, repair a starter in auto repair shop.
2. If the gear wheel does not move quickly forward, unscrew and replace the traction relay.


1. Seal a dividing seam (F) with suitable sealing material.
2. Suspend the traction relay on the bifurcate lever in a starter, then screw the traction relay.
3. Screw the wire going to the traction relay.
4. Again check a starter as it is described above.
5. Establish a starter.