I tried this once. Got everything apart and had the wiper module in my hands.

Took all screws out but could not prise the lid off. For fear of breaking something that was unbroken atthat point I gave up.

It looks like the cover is snap fitted over the lower case?????

I did not separate the wiper motor.

I believe there are two versions of the wiper and mine is the very hard to service version.

It was surprisingly easy to get everything apart and at least I degunked the lower windscreen seals and gave everything a good clean.

I advise the same remove and inspect process for the sunroof seal for all you DIY'ers. Well worth checking for rust and cleaning in and around this area. The seal will come out with evidence of rust if it is there.

89 300CE