Electrical & Wiring Repairs
Electrical Fault Diagnosis & Wiring Repairs in Shepperton
Modern vehicles rely heavily on complex electrical systems and control modules. When faults occur, they can cause warning lights, intermittent problems or complete system failure.
At Walton Bridge Garage Ltd in Shepperton, we carry out structured electrical fault diagnosis and wiring repairs using professional diagnostic equipment and testing procedures.
We trace and test circuits — we do not replace parts based solely on fault codes.
Common Electrical Fault Symptoms
- Intermittent warning lights
- Vehicle not starting
- Parasitic battery drain
- Blown fuses repeatedly
- Central locking or window faults
- Lighting faults
- Communication errors between control modules
Electrical faults can be complex and often require systematic testing to identify the root cause.
Parasitic Battery Drain Diagnosis
If your battery repeatedly goes flat, an electrical drain may be present.
We can test for:
- Excess current draw with the vehicle switched off
- Faulty control modules remaining awake
- Aftermarket equipment issues
- Short circuits or wiring faults
Accurate testing prevents unnecessary battery replacement.
Wiring & Circuit Repairs
Damaged wiring can result from corrosion, rodent damage, water ingress or general wear.
We carry out repairs to:
- Damaged wiring looms
- Broken or corroded connectors
- Earth (ground) faults
- Sensor wiring faults
- CAN bus communication wiring where applicable
Where possible, wiring is repaired correctly rather than replacing complete harnesses unnecessarily.
Control Module & Network Faults
Modern vehicles use multiple interconnected control modules communicating over data networks.
We diagnose:
- CAN communication faults
- Module coding issues
- Voltage-related system faults
- Network-related warning lights
Structured testing helps determine whether the issue lies with a module, wiring or power supply.
Water Ingress & Corrosion Issues
Electrical faults are sometimes caused by water ingress into wiring connectors or control
