I has a DCS message appear and my brakes were making a strange noise with a shudder on the brake pedal, diagnosed as the rear offside brake sensor which was replaced and now my brakes are working properly again, EXCEPT that I still have the amber traction light flickering ON / OFF when my ignition is on and when driving. There are no codes showing on the OBD reader, it is showing no faults at this time.

Any clues as to why the traction light is pulsating and how do I clear the unknown fault??

 

Reading between the lines, was the initial diagnosis (for the DCS message) performed by a shop? You then mentioned a new symptom (amber traction light flickering) but no codes on an OBD reader. I take it this reader was a different unit?

For the first diagnosis (brake sensor), that scanner had to be capable of reading Chassis fault codes. These are in the format of C followed by 4 (or more) numbers, such as C1234. If you are now trying to read chassis codes again, most "OBD readers" can only read Powertrain codes, which will start with a P, such as P1234.

 

Hi.
performed by a shop yes, they took me for a drive with their OBD connected and showed me the readings for the wheel sensor and the RH rear was all over the place, after sensor replaced they used the same OBD and the faulty sensor was now ok and no messages were seen.
But the traction amber light remains flashing and they are now stumped not knowing what to do next. It drives perfectly well but this light is annoying whilst continuously flashing. It’s not on steady if that is any difference.
As you say I don’t think their OBD reader reads chassis faults, so where do I go to next?
Thank you for your input.

 

If the shop's OBD-ii UNIT can read wheel sensor output signals, it can most likely read chassis codes as well. The problem is that the Jaguar lexicon of proprietary codes often gets mis-translated when entered into the 3rd party manufacturer's database and does not point you in the correct direction.

Take a look at your repair order/invoice and see if there were any other DTCs recorded in their investigation of your problem. Raw codes are what is helpful to us, e.g., C1234...

 

https://www.jaguarforums.com/forum/s...-u1262-274460/

have a read, from post 11.

Likely wiped the configuration of the DSC when clearing code.

 

Problem now solved. The brake module was recalibrated.