Diagnostic Testing
Car Diagnostic Testing in Sharpthorne, West Sussex
Our new diagnostic test equipment enables us to download the software required to access your onboard data. It means you avoid the need and cost of visiting a main dealer.
The diagnostic tester helps us to diagnose faults with your car. Diagnostic testing can often be carried out while you wait although some problems are not always clear and require further investigation. Warning lights on your dashboard are often the first sign of a problem. Your car’s ECU (Engine Control Unit) will record a code when something goes wrong which is revealed when the diagnostic equipment is plugged into the car.
When the fault is found and repaired we can usually cancel the fault code and your warning light will go out.
What does the warning light mean?
Some warning lights are more serious than others and we have compiled the list below of the most common ones. If you do not know what a light means or are worried about it please give us a call so we can advise you on the best course of action.
An Engine Problem
Do not use the car and seek professional advice. Your car’s ECU should have stored a fault code.
Oil Pressure Warning
If this warning light stays illuminated after starting turn off your engine. The oil might need topping up. If the oil level is OK seek professional help.
Coolant Temperature Warning
This could simply be coolant level, there may be a coolant leak or a problem with the fan.
Battery/Charging Warning
This could indicate poor connections on the battery, the battery might be failing or a problem with the alternator that charges the battery.
Air bag warning light
If this stays illuminated after starting there is a fault with the airbag. A fault code will be stored in the car’s ECU. An airbag warning light is a MOT failure.
Service Required
Your cars service interval may have been reached. It might also indicate that a light has failed or another problem.
Glow Plug (Diesel Engines)
This indicates the glow plugs are warming up and the engine should not be started until it goes out.
Tyre Pressure Warning
Indicates that a tyre has lost pressure. This may be due to a puncture.
Brake System Warning
This light shows when the handbrake is on. At other times it may indicate that brake fluid is low or brake pads are worn out.
Anti-lock Braking System
Indicates a problem with the anti-lock braking system and needs to be checked. A code will be stored in the car’s ECU. An ABS warning light is a MOT failure.
Traction Control
Indicates when the traction control system is in use (conditions are slippery). If this light stays on it indicates there is a problem with the system. A Traction Control warning light that stays on is a MOT failure.
