16- Z3 Replacing the Seatbelt Clip Pt2

Many of you who owns the BMW Z3 are or have most likely experienced the problem with dash light such as ABS and ASC, illuminating like in the image below...

Note: One recommends reading the diary first and then linking to workshop notes to maintain the continuity of the theme...

<<<This usually indicates problems of a faulty ABS/ASC controller/pump. Here is a simple solution how to get rid of the lights and get the ABS and ASC system back to working order.

If your pump look like this it can be repairable. (Part No. 34.51-1 164 897)>>>

1. First step is to remove your pump from the engine bay, no need to disconnect the battery before process (however one would recommend to do so, to save on other possible shorts in other circuits). This pump is not vital and therefore the Z3 can be run without it.

2. When your pump is out, locate the following:>>>
Note: the orientation of the case and cut the plastic using a
small rotary cutter, ideally between where the retaining studs
would be situated.

Lift off the cut plastic square and the circuit board inside
will be exposed

The problem with majority of these ABS/ASC pumps is that the solder on these two joints fail over time. These joints are from the power supply connection of the pump. Inspect carefully seeing it it is soldered together and duplicate through refreshing the solder.

This is the power connector which joints fail over time

3. You will need to resolder these joints to re-enable the power voltage to go to the power pump. DON'T solder away from the inner circles.

The following is just an example of how it should look. As long as the solder is making contact or is seen as close to the original inspection, has been refreshed and is bonding, it should do the trick...

4. Replace the cut-out plastic cover back into place. Make sure it is secure, glued and is watertight. 'Gaffa tape' can be used as a further safeguard over the top to help keep it waterproof.

5. Reinstall the pump back to engine bay, screw the screws and reconnect the connector. Start the engine and go for at least a 10-15 minute drive this will reset and initiate the system if the soldering was done correctly. At this point the warning light should have gone out...

Information, - some text or instruction reiterated: Courtesy of from the original by 'littlefeller & antm72 zroadster.org Wednesday, 4 April 2018 - this added to Paragon 06.10.20