It can also show that there’s too little coolant in the system. This lamp indicates that the coolant has exceeded its maximum temperature. If you keep driving, the engine is likely to fail completely, suffering serious damage in the process. This could be due to insufficient oil or a more serious mechanical failure. On some cars this may glow amber to indicate a low oil level, but generally this is a red warning lamp indicating a serious loss of oil pressure. Airbags are an integral and essential part of the car’s safety system, and they are not just an optional extra. This indicates a fault with the airbag system, which does not affect the way the car drives or handles but has very serious consequences – obviously – if you are involved in an accident. You may be able to manoeuvre it to a safe position at low speeds, with effort, but it will be dangerous to drive at normal speeds. Practically all modern cars use power steering, and if this fails the steering will become extremely heavy, so that it’s difficult or impossible to control the car safely. An ABS lamp indicates the Automatic Braking System has a fault, making skidding under braking more likely. At the very least you may lose servo assistance, making the brakes extremely heavy to operate, and at worst the brakes could fail completely. This indicates a fault with the braking system, and the consequences hardly need spelling out. The engine may fail (expensive and potentially dangerous) or it may enter a limp-home mode that will get you to a place of safety but no more. This indicates a mechanical fault with the engine, or a problem with the ECU, the electronic Engine Control Unit. You or your car are at serious risk, and you should pull over and turn off the engine as soon as it’s safe to do so and get some help from a roadside assistance service or a local garage. These warning lights are shown under STOP THE CAR! in the picture above. Which warning lights should I stop the car for? It's better to replace the faulty part first before clearing the code and extinguishing the warning light. Otherwise it'll come on again soon after you start driving. Other car warning lights can be turned off with a fault code reader, but it's important to know the precise cause of the light. A DPF warning light should disappear when you take the car for a longer drive to burn off the captured soot and a service light can sometimes be reset by following an often convoluted button-pressing procedure. Some car warning lights can be turned off by simply topping up the brake fluid and windscreen washer bottle. How do I turn off a car warning light?ĪutoFix from Haynes is the most advanced car repair tool you can buy, and features a section on car warning lights that tells you what the light means and what you need to do to make it go away. Some of them are gentle reminders of things you need to attend to, some of them are there for information only and some are extremely serious and you have to act straight away. Most dashboard symbols are common to all car makers. Start your car engine and a variety of dashboard symbols will come on – the engine management light, the battery light, the ABS warning light, the oil warning light – and, after a few seconds, go off again… except that sometimes they don’t. Discover which Haynes Manual is best for you.NEW Fault Finder - Diagnose the problem.
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