Wipers not parking correctly

C

cj10jeeper

Lifer
 Lichfield, England
Well the problems in the title

I raised the issue some months ago about my wipers parking in the wrong place, but never really got to the bottom of it. Well yesterday the issue deteriorated, probably due to a 300 mile drive with the wipers on for 90% of the journey.

So to expand the wipers cycle correctly in that they go right to the bottom of the screen on the downsweep, and of cuorse complete a full sweep upwards, but when they stop either on park or intermittent, they cyle to the bottom of the screen then travel up several degrees from the lowest point, such that the blade ends are perhaps 6" higher than they should be. :( This looks pretty tacky with them parked right up the windscreen when they should be tucked down and out of the way.

The obvious initial thought would be to move the arms on the spline 1 or 2 notches, but this is not the solution as it would simply result in the blades going off the bottom of the screen.

Before I start to pull bits off is there an adjustment for the park position on the motor or some other means? Many years ago it used to be done by turning a contact switch on the motor arm, but imagine we have moved on.
 
Mary's Z4 had exactly the same issue. Luckily the car is a CPO so we took it in and they replaced the whole wiper motor assembly. Never had the issue since.

The way the assembly look on here is similar to the Z3... And I took that apart a couple of times (one only to figure out how the heck it was working).
There is indeed a switch in there that basically cut of the electricity only when the blade is at the bottom, regardless when you off it: I would figure it's faulty or something. Not sure if Carsoft would pick up anything on this matter since I there shouldn't be an actual sensor for the wiper blade position.

I think you have to take it a part to figure it out. Since you're there make sure you lubricate it well...
 
That will be it then. No change from 20 years ago then if it simply uses a secondary switched circuit that keeps a feed to the motor after the switch is off until it cycles to a 'park' position. Let's hope the fixing that holds the switch is loose and its revolved a few degrees. Might be some time before I get time to fix it but at least I know pulling the covers off to get to the motor is likely to be worthwhile.

Shan't be giving BMW the pleasure of selling me a complete new motor
 
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