Lexus Is200 Overheating

[Musa Khan]

My Lexus IS200 is overheating. I noticed it was only doing this in stationary traffic. After some investigation I discovered the radiator fan is not kicking in when it should. In fact it never kicks in. I checked the fuse. That looks ok. I'm beginning to think its the fan switch. Can anyone tell me where the fan switch is and how to check it? Has anyone had the the same experience?

[lexynik]

i cant but someone will - have you checked every fuse in all 3 fuseboxes btw ?

[Musa Khan]

The location of the 30A radiator fan fuse is clearly shown on the inside of the fuse box lid. Are there related fuses I should check? If so, how are they related to the workings of the radiator fan?

[lexynik]

i cant say for sure but for the time and cost involved to check/replace fuses it would definately be my first move-there is a thread a bit like yours if you search which may help when a guy had his timing belt replaced and fan didnt kick in due to garage not reconnecting fanswitch plug - he managed to keep his cool in an emergency by putting heaters on max and fan in cabin on high - not reccomended in general but worth bearing in mind if you get in that position again

[Musa Khan]

Thanks for the suggestion. In will certainly check all the fuses. I have nothing to lose by doing so.

[lexynik]

no problem - here is the online manual if it helps find the location of the fanswitch manual

[Musa Khan]

Just a thought. My car has two radiator fans. Each fan is controlled by a dedicated relay (switch) in the fuse box i.e. there are two relays in the fuse box. Am I correct in thinking, unless BOTH relays are faulty, if neither of the fans operate when they should kick in, the likely culprit is the temperature switch (on which both rely to get the cue to switch on)?