Hi guys, just a sort of generalized question - the ABS/TC lights are showing on the dashboard display. I have changed the two front wheel speed sensors with working, second-hand, Wabco sensors and there are no irregularities showing on my local garages' fault diagnostic computer. So the two other things that I am wondering about are - is the problem either the ABS pump, or could it be a fault in the dashboard display unit ?

The brakes do appear to be working fine, and I haven't noticed any change in footbrake performance.

Pierre3.

If the brakes are working fine, then it isn't the ABS pump or accumulator. If they fail you need both feet on the pedal to stop the car. Highly unlikely to be a dashboard fault.

What diagnostic computer is your garage using? Unless it is a dedicated LR one for the P38, it won't be able to read the ABS system.

Hi Richard, thanks for your advice. I definitely don't need two feet on the brake pedal, perhaps a ships' anchor but not two feet !!!

I replaced the accumulator with a new, OE, item from LR in France, and the pump doesn't start until the fourth or fifth stab on the brake pedal so I am reasonably confident that the ABS pump is OK.

So it looks like I am back to the obvious culprit - the wheel sensors. Maybe I am inclined to read too much into these problems when I should spend more time looking at the problems that have occurred in the recent past, before looking at the worst case scenario.

I think, for the cost that's in it, that I might just buy 4x non-OE sensors, put them in and see what happens.

I don't know what diagnostic computer my garage guy uses but I know that he puts newer Range Rovers on his machine, plus all sorts of other cars. However, I am aware that the P38, being a rule unto itself, may not give up all the necessary readings to guarantee an accurate diagnosis.

Pierre3.

If it works on newer Range Rovers and other cars as well it is probably something like the Snap On unit that most garages use which doesn't work on a P38 as it is too early. No point in replacing the sensors again unless you confirm you have a faulty one. Have you tried tapping them fully home?

Richard, we swapped them around, from one side to the other when the fault stayed on the dashboard. And you may be right, the diagnostics are probably Snap-On as I noticed a lot of Snap-On stuff around in the garage.

I will try giving them a tap, just in case they are not fully seated. Thanks for the reminder to do this.

Pierre3.