Engine Coolant Light on a Vauxhall Astra 2002

carol1963_2

Morning All, Advice please. This morning my coolant light came on, there is enough coolant in the bottle so not sure.


Last time this happened I think it was something as simple as a fuse or the fan hadn't kicked in. Can someone please help.


Thank you, Carol

reeac

Is it an "engine overheating" light? If so then open the bonnet and look for any evidence of overheating such as steam or excessive under bonnet heat. If no such evidence then it may be a defective coolant temperature sensor. Happened to me with our Jazz on the M11 last December but no evidence of actual overheating and I drove another 100 miles or so with no problems. Replacement sensor cured the problem.

bertiewhite

The coolant light kept lighting on my Jeep Cherokee although there was enough coolant. It would always come on after about a minute of driving so in the end I removed the plug, cleaned it with switch cleaner and replaced it. It seems to have worked.

carol1963_2

Thank you. Where's the plug please and switch cleaner? Carol

glentoran99

carol1963 wrote: »

Morning All, Advice please. This morning my coolant light came on, there is enough coolant in the bottle so not sure.


Last time this happened I think it was something as simple as a fuse or the fan hadn't kicked in. Can someone please help.


Thank you, Carol

Same thing happened to the wifes astra, it was a sensor in the coolant bottle was faulty (all one unit), the bottle was replaced and all good again

carol1963_2

Hiya All, It was the engine coolant light (according to my owners manual booklet). No steam under the bonnet Temperature came up to 90%, light came on, carried on driving temperature came down but light still stayed on. Carol

bertiewhite

carol1963 wrote: »

Thank you. Where's the plug please and switch cleaner? Carol

I don't know about an Astra but it was obvious where the plug was on the Jeep - isn't there a coolant level plug on the bottle somewhere? It might be underneath?

As for switch cleaner - you should be able to buy it online or you could try a squirt of WD40.

peter12345678910

Had the same problem 6 months ago, I simply gave the connector to the sensor a good squeeze though I could not see it. Never had a problem since.

Strider590

On my Vectra, if it was not at MAX, then the warning light used to come on in right hand bends (usually on DC or motorway a slip lane).

Muscle750

Fav on Astras is the auxillary fan on rad seizes up however if it hasnt got air con it wont have one.