Symptom | Possible reason |
Battery not "keeps" charge | The alternator drive belt is worn out, or the adjustment of its tension force is broken (see chapter Car maintenance). |
Electrolyte level too low (see chapter Car maintenance). | |
The battery terminals are oxidized, or the wire lugs are loose on them (see chapter Car maintenance). | |
The generator does not produce the required charge current (see chapter Ignition system). | |
The electrical wiring of the charge system circuit is broken or otherwise damaged, or the fastening of the terminals of the contact connections is loose (see chapters Ignition system and Onboard electrical system). | |
The battery is discharging due to a short circuit in the circuit (see chapters Ignition system and Onboard electrical system). | |
There is an internal battery defect (see chapters Car maintenance and Ignition system). | |
On some models of early years of production, the possibility of a burnout of the ignition / charge control lamp is not ruled out (see chapter Ignition system). | |
Ignition/Charge Warning Lamp Stays On After Engine Starts | The generator is faulty or there is a defect in the electrical circuit of the charge system (see chapter Ignition system). |
The alternator drive belt is worn or broken, or the adjustment of its tension force is broken (see chapter Car maintenance). | |
Functioning of a generator tension regulator is broken (see chapter Ignition system). | |
Ignition/Charge Warning Lamp Does Not Illuminate When Engine Is Started | Burnt out filament (see chapter Onboard electrical system). |
There is a defect in the printed circuit board, wiring or lamp socket. See Chapter Onboard electrical system). |