Signs of an electrical fault in a car
* Starting problems: Difficulty starting the engine, slow cranking, does not start at all.
*Flickering or dim headlights: LED and halogen headlights do not work properly or flicker.
* Dead battery: The car will not start, even with a new or charged battery.
* Inoperative windows and door locks: Windows do not go down/up, doors do not open/close electronically.
*Dashboard failure: Instrument panel indicators do not work, speedometer does not show speed.
* Charging system malfunction: Discharged battery, even with the engine running.
* Engine overheating: A faulty temperature sensor or a malfunction in the cooling system, causing the engine to overheat.
* Air conditioning problems: The air conditioner does not turn on or does not cool properly.
* Radio and navigation system malfunctions: The antenna, speakers, or other audio system components are malfunctioning.
* Burnt plastic or insulation smell: A sign of a short circuit or other serious electrical failure.
Common Causes of Electrical Failure
* Faulty or loose connections
* Damaged wire insulation
* Faulty relays and fuses
* Alternator or battery problems
* Damage due to vibration, corrosion or extreme temperatures
* Factory defects or software problems
Electrical troubleshooting
Electrical troubleshooting requires specialized knowledge and equipment. It is recommended that you contact a qualified mechanic for diagnosis and repair.
Precautions
* Disconnect the battery before starting any electrical repairs.
* Use insulated tools and proper electrostatic discharge (ESD) protection.
* Do not attempt to disassemble or repair complex electronic components without extensive knowledge.
* If you are not confident in your capabilities, consult a professional.