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Traction Control and ABS warning lights are on!


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My car has the ABS and Traction control warning lights lit up on the dash.   Reading old posts there are 3 common faults:

1) faulty brake pedal sensor, replace with new one

2) re-calibrate the steering position sensor

3) ABS/wheel speed sensors on each wheel faulty

I've installed a new brake pedal sensor and I still have the warning lights.   OBD reader does not show any codes so can't reset / clear anything here.   Question to others who had this issue, did the lights go out once you installed a new sensor or did you need to do any reseting of some electronics?

If the brake pedal sensor was not at fault and its one of the other two options are there any checks I do my self to help narrow it down?  Or do these all require specialist Lotus software and a trip to a dealer? 

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I seem to remember that the ECU needs 5 key on/key off cycles with the issue no longer present to clear redundant codes, could it be that?

88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport

Evora NA

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Oh yes I forgot about that trick, thank you Bibs.

Does the engine need to be started? Or just ignition turned on, wait for a few seconds then off again and repeat 5 times?

Will give it a go this evening.

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My traction light came up a few times and despite going trough at least 5-7 cycles kept coming on and going off ? 
I will ask lotus to check it whilst the car is currently in waiting for it’s starter motor to be replaced and having full brake and pad changes , as well as a 50k service 

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If the light keeps coming on, the issue is still present. 

88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport

Evora NA

For forum issues, please contact the Moderators. I will aim to respond to emails/PM's Mon-Fri 9-6 GMT. 

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Another possible cause... Can you see corrosion on the ABS rings behind the hubs? If so, clean it up with some wire wool and see that gets rid of the fault.

Also, have you checked all your fuses? A long shot too...

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Thank you Steve for the suggestion.   I'm not sure what a ABS ring is but  I'll see if I have time to jack the car up and take a look at the hubs.  I'm sure I'll figure it out when I take a look. 

Also no not checked the fuses either.  Will add that to list when I can find some time to work on the car again. 

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Hi Jai,

The ABS ringS looks like one of these and sit behind the hubs. Sometimes corrosion builds up and “rounds off” the signal detected by the sensor making them play up.

 

965E7375-D7B4-4A9F-9D98-3449980EA89F.jpeg

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