If one or more electrical components in your vehicle stop working — such as lights, wipers, power windows, radio, or central locking — it indicates a fault in the wiring, fuses, relays, or control modules. Since modern cars rely heavily on electrical systems for both safety and comfort, these issues should be diagnosed promptly.

What does it mean if electrical components stop working?

This usually means there is an interruption in power supply, a blown fuse, faulty relay, or a problem in the wiring or control system. In some cases, it may be an issue with the component itself, like a burnt-out motor or failed switch.

Common causes of electrical components not working

• Blown fuses or faulty relays
• Loose, corroded, or broken wiring connections
• Weak or failing battery
• Faulty alternator or charging system
• Damaged switches or control stalks
• Failed motors (e.g. window or wiper motors)
• Faulty body control module (BCM) or ECU

Why do you need to fix this problem quickly?

Some electrical components, like headlights, indicators, wipers, or ABS, are safety-critical. If they’re not working, your car may be unsafe or even illegal to drive. Prompt repairs restore functionality and reliability.

How do you know when to get it checked?

You should book an assessment if:

• Multiple electrical systems stop working at the same time
• A single component (like a window or wiper) no longer operates
• Dashboard warning lights are illuminated
• Fuses keep blowing repeatedly
• You notice burning smells, smoke, or melted wiring

What happens during an assessment?

A mechanic will:

1. Test the battery and alternator output
2. Check fuses, relays, and circuit integrity
3. Inspect wiring connections for corrosion or breaks
4. Test the affected component (motor, switch, or module)
5. Scan the ECU/BCM for fault codes
6. Advise whether repair, replacement, or rewiring is needed

How much does it cost to fix?

Minor fixes such as replacing a fuse or relay may cost $50–$120. Replacing switches or motors typically costs $200–$500. More complex wiring or control module repairs may range from $400–$1,200+, depending on the fault.

Is it unsafe to drive with electrical components not working?

Yes. If safety-related systems like lights, wipers, or ABS are not working, it can make your car unsafe and illegal to drive. Even if the fault is with comfort features (like windows or stereo), electrical issues can worsen and cause bigger failures if ignored.