BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car

+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engine
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. Exhaust system
+ 8. Transmissions
+ 9. Coupling
+ 10. Brake system
+ 11. Running gear
+ 12. Body
- 13. Electric equipment
   13.1.2. Search of malfunctions
   13.1.3. Safety locks
   13.1.4. Relay
   13.1.5. Breaker of indexes of turn / alarm system
   13.1.6. Switches on a steering column
   13.1.7. Ignition lock
   13.1.8. Receiver
   13.1.9. Antenna
   13.1.10. Guard of devices
   13.1.11. Payment SI (index of maintenance)
   13.1.12. Headlights – replacement of lamps
   13.1.13. Adjustment of headlights
   13.1.14. Headlight case
   13.1.15. Replacement of lamps
   13.1.16. Screen wiper electric motor
   13.1.17. Heater of back glass
   13.1.18. Safety cushions
   13.1.19. System cruise control
   13.1.20. The central locking system
   13.1.21. Electric stelokpodjemnik
   + 13.2. Electrical circuitries
+ 14. Useful tips


13.1.11. Payment SI (index of maintenance)


Nickel-cadmium batteries for SI payment food

The payment provides inclusion of a light signal after commission of a certain run when there comes the turn of service of this or that knot or the unit. The payment represents the on-board computer which memory eats from separate recharged nickel - cadmium batteries. Switching off of a payment is provided with the special device connected to the diagnostic socket. A battery expiration date – about 6 years after which it should be replaced.

Batteries are recharged from onboard network of the car. For the term of operation temperature conditions, especially warmly strongly influence. At the increased temperature tightness of batteries can be broken and electrolyte can get on a guard of devices.

Malfunction of the auxiliary battery leads to violation of indications of a part of devices – a tachometer and the index of temperature, and also to increase in noise of the receiver and to impossibility of switching off of alarm lamps. Conclusions of batteries are soldered to a payment therefore it is expedient to execute their replacement in a workshop for what it is necessary to remove a guard of devices and a payment.


At removal of a guard of devices and payments take measures against casual breakdowns of electronic components static electricity.