D4 failing height sensor already

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Originally Posted by Graeme

I don't see the need to have a spare wheel speed sensor.

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I've had 3 sensors fail in 6 years of trips (not all on my car!) - having a spare makes it an easy fix.

Cheers,

Gordon

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Originally Posted by BobD

Graeme, does the height sensor come with the rod attached? Perhaps the sensor is the same but the rods are different for all four corners.

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The rod is supplied with the sensor.

Pre 2007 D3s & RRS which have a different sensor signal/ecu relationship to 2007+ might use 4 different sensors.

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Originally Posted by gghaggis

I've had 3 sensors fail in 6 years of trips (not all on my car!) - having a spare makes it an easy fix.

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What effect did the failed sensors have other than to trigger the suspension to lower and did the sensors fail because the wire was ripped off?

From memory the sensors on my 2005 are different left to right.

I had one sensor (intermittently) playing up on the front but it came good before I could determine which one. I'm going to buy one of each before it returns.

The manual says that the suspension heights should be re-calibrated when replacing (or even removing and re-installing) sensors.
How important is it?

I'm thinking it is to adjust for variances between sensor tolerances and positioning. and you wouldn't see much variation.

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Originally Posted by Graeme

What effect did the failed sensors have other than to trigger the suspension to lower and did the sensors fail because the wire was ripped off?

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Loss of a wheel speed sensor disables terrain response, HDC, and lowers car. I suspect the entire traction control system would be disabled too, as there is no way to judge the slip delta between the wheels. In all of the 3 cases I saw, the sensor failed - the cabling was intact.

Cheers,

Gordon

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Originally Posted by Graeme

Not quite 100K kms and a height sensor has started to give false readings, with the left rear corner sometimes getting quite low. It seems to have a bad spot around access height although the latest problem occurred at normal height which took some fiddling to coax it to raise. Its just out of warranty too!

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I would suggest "implied warranty" should be invoked . . .