Monthly Archives: August 2017
A new study of 2,000 drivers shows nine in 10 have had a symbol pop up on the dashboard which they haven’t recognised – but what can motorists do to expand their knowledge?
Here at Trust My Garage, we think you should get to know your vehicle a bit better, so we’ve created this handy breakdown of what all the lights on your dashboard mean. As always, it’s best to refer to your Owner’s Manual for the correct detailed information for your vehicle, but for some quick reference here’s what you need to know:
Check Engine Light:
Indicates the engine computer has set a fault code. Usually requires diagnosis with a professional scan tool.
Indicates voltage level is below normal level and the vehicle’s charging system is not functioning properly. Check battery terminals, alternator belt, and battery condition.
Coolant Temp Warning:
Indicates temperature has exceeded normal limits. Check coolant level, fan operation, radiator cap, coolant leaks.
Transmission is operating at higher than optimum temperature as transmission fluid is hotter than normal. Check transmission fluid level and engine coolant level.
Oil Pressure Warning:
If this light stays lit, it indicates loss of oil pressure. Immediately check oil level and pressure.
Oil Change Reminder:
Indicates that oil life has expired. The reset procedure should be listed in the owner’s manual.
Service Vehicle Soon:
Typically indicates a lighting or other electrical problem that is controlled by the body control module. Check all lights (head lights, turn signals, brake lights, and hazard lights). This symbol may also be used to warn driver of a traction control problem, or a communication problem between modules.
TPMS (Tyre Pressure Monitoring System):
Indicates the tyre pressure monitoring system has found a tyre with low air pressure or there may be a sensor malfunction. Check tyre pressure. Some vehicles will allow manual reset of TPMS warning light and others will require professional diagnosis. Refer to owner’s manual.
Indicates one of three possible conditions: the handbrake is on; there’s a problem with the braking system/brake fluid is low, or there may be an ABS problem. Check your brake fluid and make sure the handbrake is fully released. If the problem is in the ABS system, it may need a professional diagnosis.
Reduced Power Warning:
Indicates Engine Computer has limited engine power output. The ECU has many levels of reduced power depending on what component has failed in its control system. Usually requires diagnosis with a professional scan tool.
Indicates that the Anti-lock Brake system has a fault and that the ABS isn’t working – this doesn’t mean that your brakes aren’t working but it’s still important.
Indicates that cruise control is set during driving.
Traction Control or ESP:
Illuminates when the vehicle’s traction control/anti-skid or electronic stability system is in use. Usually an indicator that conditions are slippery.
Traction Control Fault:
Indicates that there is a problem with the vehicle’s traction control/anti-skid or electronic stability system.
Indicates that there is an exterior light on the vehicle that is not functioning properly.
Indicates that a door (including bonnet and boot) is not closed. Open and close all doors. If vehicle is left in this condition overnight it can drain the battery.
If this light stays illuminated after starting, it indicates that the vehicle has found a fault in the airbag system and the computer has set a code. Professional repair of the supplemental restraint system is highly recommended.
Washer Fluid Reminder:
Indicates washer fluid is low. Fill washer fluid reservoir. The cap has a symbol that looks like a windshield. Some vehicles have separate reservoirs for front and rear window washers.
Indicates that the vehicle’s front fog lamps are illuminated.
There are also dashboard lights that are only applicable to diesel vehicles. Here’s what those symbols mean:
Glow Plug (Diesel):
On diesel vehicles, this light indicates that the engine’s glow plugs are warming up and the engine should not be started until this light goes out.
DPF Light (Diesel):
There is a problem with the DPF that requires attention.
DEF Light (Diesel):
This light indicates the diesel exhaust fluid reservoir is low on fluid. If your diesel car is only a few years old, you might have spotted a second, smaller filler cap next to the main diesel filler. If that cap is marked ‘AdBlue’, then your car is fitted with clever technology designed to reduce its emissions. AdBlue is a non-toxic liquid that’s colourless in appearance and is a solution of water and urea. To comply with Euro 6 legislation, recent diesel-powered cars use SCR technology to inject microscopic quantities of this liquid into the flow of exhaust gases. It has become increasingly commonplace but isn’t standard in every diesel car, and if you’re a low-mileage driver it is unlikely to affect you between services.
Information has been provided from Autozone.com and is correct at the time of publication.
An orange light specifies a warning or something that needs your attention, a red light means stop immediately and seek advice from a professional.
If you’re concerned about any lights illuminating on your vehicle’s dashboard, you can visit your local Trust My Garage member via our Find a Garage map, where you’ll find a local, independent, Chartered Trading Standards Institute approved garage ready to provide you and your vehicle a friendly and professional service.
For further information about Trust My Garage you can visit our website here.