Vehicle electrical systems that may not work:
Lighting:
* Headlights (low, high beam)
* Side lights
* Brake lights
* Direction indicators
* Reverse
Security systems:
* Electronic airbag control unit
* Anti-lock braking system (ABS)
* Dynamic Stabilization System (ESP)
* Traction Control System (TCS)
Comfort:
* Window lifters
*Seat adjustment
* Air conditioner/heater
* Audio system
* Central locking
* Hatch
Starting the engine:
* Starter
* Battery
* Generator
*Alarm
Electronics:
* Speedometer
* Tachometer
* Fuel level and temperature gauges
* On-board computer
*Navigation system
* Radio and Bluetooth
Signs of malfunction:
* Dim or flickering lights
*No turn signal or brake lights
*Alarms do not work
* Window regulators stick or don’t work
*Air conditioner or heater does not turn on
* Engine does not start
* Engine warning light comes on
*Dashboard readings are incorrect