16-22-obshhaya-informaciya-o-paneli-signalnykh-lamp-napominaniya-o.html

16.22. General information on the panel of alarm lamps of a reminder on term of service (SI)

All models which have alarm lamps of a reminder on service term, are equipped with the SI panel located in an instrument guard. This panel includes alarm lamps through certain number of kilometers of run of the car. To switch off these lamps it is possible only by means of the special device which is connected to the socket of check of the engine (see. Head Routine maintenance of the car). The SI panel is the independent device which includes a chip and batteries.

Recharged nickel - cadmium batteries of the SI panel feed memory of the computer at power failure (for example, during ignition inclusion) or at total absence of tension (at the discharged or disconnected battery). It guarantees to the computer a continuous food that he continued to consider the passable kilometers and included alarm lamps in time.

Service life of batteries about 6 years after the lapse of which it is necessary to replace them with the new. Besides, as they are recharged from engine system, they can fail earlier for any reason (for example, the burned-down safety lock, damage of conducting or too long inaction of the car). The excessive heat or cold also can reduce service life of batteries, especially a heat. Very high temperatures can lead even to splitting of batteries and an acid effluence on components of an instrument guard.

On some devices operated by the SI panel, the sat-down or discharged batteries can influence. Signs of that batteries of the panel sat down or were discharged, unstable indications of a tachometer or the temperature sensor, background noise can serve in a radio receiver and impossibility to switch off alarm lamps of the panel by means of the special device.

Though at the producer it is possible to get only SI panel knot entirely, batteries are on sale separately in other places. As replacement of batteries can be available to the house mechanic, they are soldered to the panel that in case you are insufficiently competent of it and have no necessary tools, this work was provided to the skilled technician electronics. The considerable economy of means can be reached, if you remove an instrument guard (see. The section Removal and installation of components of an instrument guard) also will carry it to the expert in electronics.