Replaced both front wheel height sensors.

[bbyer]

Last week, my LR dealer replaced both front wheel height sensors (Right Hand RQH500061 and the Left Hand RQH500071 $CDN39.66 each), plus the electrical plug and about 6 " (150 mm) of associated wiring harness, (Wire Assy-Jum YQM503220 $CDN56.64 each).

The Right Front sensor was showing defective just before Christmas, (wheel jumping about on the 4x4 display screen, but not actually doing so - just displaying that it was, and hence the compressor was starting more than usual and the nose was bobbing up and down more than normal, and the suspension light would illuminate every so often), and hence that is what initiated my first of the New Year service visit.

Once the HSE was in the shop, and by my choice, I also requested replacement the Left Front sensor at the same time as I understood that there is a reliability concern with the assembly, (last 6" of wire, connector, and the sensor).

I myself assumed the concern was the connectors, (either jack or plug or both), and that was the reason for the recommended replacement of the last 6 inches of the wiring harness and associated plug that snaps into the sensor, plus the installation a new sensor to mate with the new wire/connector.

I also understand that there are similar concerns related to the other two rear OE sensors which I chose not to replace at this time.

I guess I am wondering how quick I should be about arranging replacement the two rear sensor assemblies?

My secondary question as it is not clear to me, is just what the real problem actually was?

I kind of assumed that the concern that would lead to the eventual replacement of all four sensors was a connector design defect, (harness or sensor, not sure which one?).

As such, I looked at the pins and connectors on the two removed units and too my surprise, all connectors/pins looked good - nice and clean, and showing no signs of water ingress or corrosion etc. I also realize that does not mean that there is not some internal continuity problem within the connector that is not readily visible.

Since the primary concern is not clear to me, I wondered if from previous experience, anyone knows of the reason behind the anticipated eventual need to replace all sensors and 6" of wire/connector on my, (and I guess others), 2005 NA spec HSE's and maybe the Aus/Euro spec ones as well.

As I said above, should I be in any hurry to replace the two rear sensor and harness assemblies?

[Tote]

Welcome aboard. This is the first I've heard of these sensors failing, maybe a cold weather or road salt related issue. We don't get much of that here ))

Regards,
Tote