2005 Yaris 1.3 Temperature Lights

[Ben Davy]

Hi everyone, my girlfriend has a 2005 Yaris 1.3 and when starting from cold both blue and red temperature lights are on and then go out at the same time. It only did it a couple of times at first but now it does it every time its started.

The red light never comes on again once its warm. I have checked the coolant level and its fine.

I was hoping someone could shed some light on it for me.

I have done a lot of searching on it but just cant find an answer. Im sure we arent the only people its happened to.

Thanks,

Ben

[Neil robertsin]

When cold the blue light should remain on until the car warms up the most likely cause of it not is a faulty temperature sensor.

[Red Yaris 54]

When you start the car both blue and red lights should illuminate.....This is part of the start up test sequence......After the car is started the blue light may remain on until the engine reaches operating temperature....While the blue light is on it is advisable not to over Rev the engine

The red light should only come on again if the engine is overheating....If this happens you should stop and investigate.....but never remove the radiator pressure cap on a hot engine

[Ben Davy]

Thanks for the replies. I figured it should light up when it first starts but I had the car before her and it always did the test and then the red light went out straight after and the blue one when the engine was warm. Now they both stay on until the engine is warm and go out together. So there is something different about it to what it used to do.