What the warning light means

A car usually comes into the workshop with a single complaint: a noise, a warning light, or a noticeable rise in fuel consumption. Yet the parts of a car work together; wear on the brakes shows up in the suspension, and play in the suspension shows up in the tyres. That is why we assess a car across the whole of the relevant system rather than through one complaint.

The sections below gather the points our customers ask about most often. Even so, every car has its own history, and a definite assessment can only be made after an inspection.

How the inspection works

The car goes up on the lift, and the brakes, suspension, exhaust line and underside are checked by eye and by hand. On the electronic side the fault codes are read and the circuit they point to is confirmed on the car. A code on its own is not a fault; what matters is the condition under which it was logged.

After the check, the parts that need replacing, the labour time and the total are listed. When you can collect the car is written on that list too. No item is started before you approve it.

What to pay attention to

• Noting how far the car has been driven since the warning light came on.
• Telling the workshop the date and mileage of the last entry in the service book.
• Asking for the old parts that were replaced; you are entitled to see them at handover.
• Describing at what speed and on what surface a noise or vibration appears.

After handover

A finished car goes out on a road test, and is not handed back until the complaint is confirmed as resolved. On brake and suspension work it is normal for parts to bed in over the first hundred kilometres; if you hear anything different in that period, tell us.

The information in this article is for general guidance and does not replace an inspection. The right approach for your own car becomes clear after a check at the workshop.