D4 Wiper failure

[joetill]

Hi,

Finding these Land Rover forums so helpful. We have recently purchased a brand new 2016 Discovery 4 TDV6 (had it since July). Really great car and was planning trip up to Queensland end of the month - Fraser Island, etc. Unfortunately, a few weeks ago while driving in really heavy rain, the wipers locked in upright position, we had no visibility at 100km/hr but managed to pull over. We sat with the car off for 5 minutes then the wipers started to work again. Took it to Land Rover, they replaced the relay. Two weeks later wipers fail again. Took it to Land Rover, they replaced the wiper motor. Around two weeks later, wipers have failed again. They eventually start working after stopping and waiting a few minutes. Car is now back at Land Rover and I think they're guessing as to what the problem is. Has anyone experienced this issue or something like it? Are there any recommended Land Rover mechanics that I could get a second opinion from (in Victoria) Any help appreciated.

Thanks Joe

[Meken]

I find Intermittent setting doesn't work the best in really heavy rain [emoji12]
Were they on auto - maybe it's the sensor playing up

[joetill]

I find Intermittent setting doesn't work the best in really heavy rain [emoji12]
Were they on auto - maybe it's the sensor playing up



I wish it were that easy ;) I read another post here somewhere by Andrew that mentioned the rain and headlight sensors are coupled and he had a wiper issue. Maybe it could be this? Will chat with Land Rover today and see what happens.

[LRD414]

Sensor issues would be unlikely to leave the wiper arms in a vertical position, which I think is what you've experienced.

I would expect the sensor to trigger a complete wiper operation cycle or cycles so the wipers finish back at the down position.

If they are stopping in the raised position (unfinished cycle) perhaps it is a power problem.

Scott

[joetill]

Sensor issues would be unlikely to leave the wiper arms in a vertical position, which I think is what you've experienced.

I would expect the sensor to trigger a complete wiper operation cycle or cycles so the wipers finish back at the down position.

If they are stopping in the raised position (unfinished cycle) perhaps it is a power problem.

Scott



Hi Scott,

Stuck in vertical position was the initial fault, but subsequently it's been no wipers activating.

Land Rover has told me the control unit/computer reports a wiper blocked error.

[joetill]

Land Rover have said they suspect it to be loose wiring/fitment of the relay. I'm not confident this could be the issue as this will be the third attempt at fixing the problem.

If it were a loose relay connection I would have expected more constant failure as opposed to fail once after two weeks ... I know it's just wipers but if we're driving in heavy rain at 100 km/hr I don't want another failure ...

[Nicky]

Land Rover have said they suspect it to be loose wiring/fitment of the relay. I'm not confident this could be the issue as this will be the third attempt at fixing the problem.

If it were a loose relay connection I would have expected more constant failure as opposed to fail once after two weeks ... I know it's just wipers but if we're driving in heavy rain at 100 km/hr I don't want another failure ...

Just a guess, check the nut under the cap that holds the wiper arm to the splines on the wiper motor shaft.