Vehicle & Technical > Discovery

Front wiper self park problem

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gb0wers:
Thanks for the replies guys.
The symptoms point strongly to wear/ dirt in the self park switch in the motor.

I can manipulate the control stalk to *make* it park so it's only an inconvenience, and if it's not an MOT fail, then I don't have a hard deadline.

Mudlark, have you done this job specifically on the wiper motor on a 300TDI Disco please. If it's fixable then I can fix it, but I'm trying to avoid pulling the motor off only to find it's crimped together in a way that makes repair unfeasible as the prospect of boxing it up again un-fixed doesn't appeal.

Cheers
Graham

Range Rover Blues:
If j j jiggling the switch is what it takes to make it park it coould also be the switch as the self=park circuit is often switched off when the wipers are 'on'

gb0wers:

--- Quote from: "Range Rover Blues" ---If j j jiggling the switch is what it takes to make it park it coould also be the switch as the self=park circuit is often switched off when the wipers are 'on'
--- End quote ---

I'll check this out as all suggestions are gratefully received. I still do expect it to be a motor problem though as it's not a case of jiggling the switch, but pushing it down to actuate the wipers, then letting it go when the wipers are close to the park position. As I remember from earlier involvement with self park on articulated trucks, when the wiper switch is turned off, the motor continues to receive power via the self park switch on the motor until at the park position, the supply is stopped as the switch is opened. The problem with my disco seems to be that the self park switch is not providing power correctly through the full range of sweep.
Cheers
Graham
PS The articulated trucks were fun. 65 tonnes of muck and metal with 6WD, interaxle difflock and limited slip cross axle diffs, tyres up to my face level.

Range Rover Blues:
Sorry, then I think some of the replies you have had are not the same problem you are getting.  Have you tried to see where exactly the self-park works? I had an old Escort that only self-parked in the last little bit of travel back down the windscreen.

gb0wers:

--- Quote from: "Range Rover Blues" ---Sorry, then I think some of the replies you have had are not the same problem you are getting.  Have you tried to see where exactly the self-park works? I had an old Escort that only self-parked in the last little bit of travel back down the windscreen.
--- End quote ---

It can stagger to a halt anywhere on the return sweep but with a little help by pushing the control down (to energise the motor manually) it can be persuaded to park properly. It's just that having to intervene manually is a pain in the bum and a distraction.
I was hoping to find out from somebody who had experienced this specific problem in the past whether the motor was fixable, or whether a replacement was the only practical answer.
Anyway, no need to be sorry about anything :-))
Cheers
Graham

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