The answer is in this post: https://www.landyzone.co.uk/land-rover/abs-fault-intermitent.263609/#post-3174091
Thanks for this. I had a look at this thread - and have to admit that I was still left a little confused but the fog is certainly lifting a bit!.
Am I right in thinking that the TC system works using the ABS system, which kicks in when the ECU sees different speeds between the wheels? So if the speed sensors in say the front left and right wheels send readings that are too different to the SLABS ECU then the ABS system kicks in a applies a braking force to the wheel with the higher reported speed? That makes sense and explains the ABS type noise and feeling when this happens.
So if my TC comes on at very low speeds and applies the ABS system to my front left wheel when there is only a tiny wheel slip, does this suggest that my front left speed sensor is faulty / poorly calibrated and therefore needs to be replaced?
If so, is this a fault that will likely show up on any diagnostic software - reading a few posts about this it seems that this may not be recorded as a fault in some cases.
Last question. Assuming that this is the issues (and it does seem like a logical conclusion based on what you guys have said) what's the cost of fixing this? Are we talking mucho spondoolies or is this something that cane be done for a reasonable price?
Thanks in advance for the advice
Cheers
H