ABS/ASC light on the dashboard solution - BWM Z3

Hello, I believe that many of you who owns the BMW Z3 experiencing problem with dash light such as ABS and ASC, those on the picture bellow.

Those are usually problems of faulty ABS/ASC controller/pump. Here is a simple solution how to get rid of the ligths and get the ABS and ASC system back to work.

If your pump look like this it can be repairable. Mine is part number 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. And if you want to run a car without it you can, nothing new will happen (I drove a 10 km without a pump and no problem).

There are 4 screws to unload it.

You need to pull the conector holder up (the black part) use screedriver but do it gently, there can be dirt over time but it goes up well. 

2. When your pump is out locate these part of the pump and cut gently through it to remove the plastic cover.

I used this cutter, bought from Lidl :D

Here is the part when you need to remove the plastic cover

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. 

This is the power connector which joints fail over time.

3. You need to resolder these joints to reenable the power going to the pump. You need just the cheap tin solder. DON'T solder away from the circles. These are mine joints after resoldering.

4. Seal the plastic cover back to place. I put the cover back and use any superglue on the top. I also put the duck tape on the top to be sure that no water comes through.

5. Put the pump back to engine bay, screw the screws and connect the connector. Start the engine and go for a little drive. And voila lights are gone! :)

Big thanks goes to "littlefeller" and "antm72" from zroadster.org forum for finding this problem.