Electrical system faults (Skoda Favorit)

Note: For problems related to the starting system, refer to the faults listed earlier in Chapter "Engine".

The battery does not hold a charge for more than a few days

• Internal battery defect (Section 1 or 12)
• Low electrolyte level in the battery (Section 1).
• The battery terminal connections are loose or oxidized (Section 1).
• The alternator drive belt is worn out or its tension is incorrectly adjusted (Section 1).
• The generator does not provide the required power for charging (Section 12).
• The generator or voltage regulator is damaged (Section 12).
• A short circuit may be the cause of continuous battery discharge (Section 12).

The generator operation indicator light remains on while the engine is running

• Broken (broken) alternator drive belt worn or improperly adjusted (Section 1).
• The generator brushes are worn, jammed or dirty (Section 12).
• The generator brush spring is weakened or broken (Section 12).
• The generator or voltage regulator is faulty (Section 12).
• The wiring in the charging circuit is broken, disconnected or loose (Section 12).

The generator operation indicator light does not light up

• The lamp burned out (Section 12).
• The wiring in the indicator lamp circuit is broken, disconnected or loose (Section 12).
• The generator is damaged (Section 12).

The lamp is not working

• The lamp burned out (Section 12).
• The contacts of the lamp or socket are oxidized (Section 12).
• The fuse has blown (Section 12).
• Defective relay (Section 12).
• Broken, disconnected or loose electrical wiring (Section 12).
• Defective switch (Section 12).

Inaccurate or erratic instrument readings

The readings increase with engine speed

• Defective voltage regulator (Section 12).

Fuel level or temperature gauges do not show any readings

• Defective pointer sensor (Section 3 or 4).
• Electrical wiring break (Section 12).
• The device itself is faulty (Section 12).

Fuel level or temperature gauges show maximum value

• Defective pointer sensor (Section 3 or 4).
• Short circuit in electrical wiring (Section 12).
• The device itself is faulty (Section 12).

The sound signal does not work well or does not work at all

[The original can be viewed on skodabook.ru]

The sound signal works all the time

• The horn button is stuck in the pressed position or its contact is shorted to ground (Section 12).
• The wiring from the sound signal to the key is shorted to ground (Section 12).

The sound signal does not work

• The fuse has blown (Section 12).
• Wiring or connections are loose, broken or disconnected (Section 12).
• The sound signal is damaged (Section 12).

The signal sounds intermittently

• The electrical wiring connections are loose (Section 12).
• The horn mount is loose (Section 12).
• The sound signal is damaged (Section 12).

Windshield/rear wipers do not work or do not function satisfactorily

Windscreen wipers do not move or move very slowly

• The brushes are stuck to the glass, or the rods are jammed (Section 1 or 12).
• The fuse has blown (Section 12).
• Broken, disconnected or loose electrical wiring (Section 12).
• Defective relay (Section 12).
• Defective wiper motor (Section 12).

The wiper blades cover too much or too little of the glass area

• The windshield wiper arms are not positioned correctly on the axles (Section 12).
• The windshield wiper rod is badly worn (Section 12).
• The windshield wiper motor or rod mounts are loose (Section 12).

Windscreen wipers are not working effectively

• The rubber of the brushes is worn out (Section 1).
• The windshield wiper arm springs are broken, or the swing arm joints are jammed (Section 12).
• Not enough windshield washer fluid (Section 1).

Windshield/rear window washers do not work or do not function satisfactorily

One or more washer jets are not working

• The jet is blocked (Section 12).
• The hose is disconnected, kinked or clogged (Section 12).
• Not enough fluid in the washer reservoir (Section 1).

The washer pump is not working

• Broken or disconnected wiring or connections (Section 12).
• The fuse has blown (Section 12).
• Defective washer switch (Section 12).
• Defective washer pump (Section 12).

The washer pump operates for some time before fluid starts to flow from the nozzles

• The non-return valve in the supply hose is damaged (Section 12).