Hi, I was just wondering whether there is any difference in the front ABS sensors and the rear ABS sensors as far as the connector cables are comcerned.

I was considering keeping two new rear sensors in the garage and one of the sellers mentioned that he had rear sensors with long cables. I was under the impression that the cables were all the same length ?

Pierre3.

No, fronts are longer.

Unless it's an early car when the rears are much longer as they run along the axle. There's multiple different lengths and the grommets are at different points along the cable length depending on where it was intended to go. All interchangeable though, you just might have a bit of spare cable to lose.

OK, that kind of makes things clearer. My car is 2001 so would I be correct, and as Richard says, in saying that it doesn't matter whether I buy long or short rear sensor, just that I would have to loose the extra cable ? There is no difference in the resistance of the sensor, even if the cable is longer ?

Pierre3.

Not worth worrying about. My Ascot, being an early car has the really long cables on the rear. When I needed one, I got A front one which was nowhere near long enough, so I just cut the cable off the old and used that to extend it. Soldered joints, glue lined heatshrink and wrapped it all in self amalgamating tape to fully seal the join.

With ABS sensors I prefer to get second hand original Wabco over brand new pattern ones.

As part of my set of ready use spares I have one rear and one front known good ABS sensor on the shelf. When I get the ABS/Traction fault on POST I use Nano to identify if it is a sensor and, if so, I use a spare sensor to just plug in (not fit) in place of that sensor and check it clears the POST fault before going on to dig out the old sensor and permanently fit the new one. I then purchase a replacement for the used spare and at least check it passes POST before storing it on the shelf.

I fully support Richard’s view that a second hand OEM Wabco sensor is preferable to a new aftermarket sensor as I have had no end of problems with short lived aftermarket sensors lasting only a few thousand miles before failing for no good reason. If only I knew where to get reliable second hand sensors or whether Wabco do an OEM sensors but not in Land Rover packaging!