Wanted ABS unit for 1999 1.9 Z3

[A&KOKJ]

Good morning. Does anyone have an ABS unit for a 1999 1.9 Z3 Roadster, please? I have attached photos of the existing one and the part number.

Many thanks.

 

[colb]

Just had a look on Realoem to check that part number, it doesn't come back so can't check to see if it was superseded with other compatible units, maybe one of our resident Breaker's can come up with a matching unit.
My 1999 1.9 showed up as this ASC Unit in Realoem site https://www.realoem.com/bmw/enUS/showparts?id=CM12-EUR-12-1999-Z3-BMW-Z3_19&diagId=34_0902

 

[A&KOKJ]

Thanks for your reply and the information. Is there a list of resident breakers on here? I am relatively new to the forum so not sure yet how it all operates.

 

[colb]

Try asking @spurs fan in a coupe on here he is a regular Breaker

 

[Ianmc]

Does anyone have an ABS unit for a 1999 1.9 Z3 Roadster, please?

ASC?

 

[Stevo7682]

ASC?

Automatic Stability Control.

Later zeds fitted with DSC

Dynamic Stability Control

Stephen.

 

[A&KOKJ]

Thanks, Ianmc and Stevo7682, for your responses. I have attached photos of what I am looking for. My ABS light on the dashboard has come on as well as another light which has no initials but has an exclamation mark inside a triangle inside a round arrow. I have no idea what that means.

 

[Stevo7682]

Right you need to stop hunting for a abs unit.

First thing you need to do is get the fault code read to see what is putting on the Abs and Traction control lights.

Main culprits are firstly ( and most likely) an abs wheel sensor at one of the 4 wheels ( if thats the problem then fault code read will show which one)

Or second is bad solder joints inside the abs pump that you have pictures of above ( again fault codes will point to this )

Or lastly a wiring break somewhere .

Abs sensors fairly common on z3 to fail no too bad to do with a bit of care.

The Abs pump lets get into that .
So the picture above of the full pump wilth all the pipes coming out.

This is 2 pieces
You have the hydro unit ( the alloy block with the pipes and pump motor ( second picture) attached
And the abs pump control unit ( the black plastic bit with the wiring going in).

So if the fault codes show up the pump as the problem its very rare that the Hydro unit is the problem it will be the control unit.

Now you can separate the control unit from the Hydro unit without affecting the hydraulic side of the brakes
All you the is the black bit on top of multiplug pry gently up this will release the multiplug at the 4 corners of the control unit you will see 4 small inverted torque bits undo them then you can gently wiggle the control off of the Hydro unit ( it will have a part number on it to match for direct replacement)
Meanwhile the car will drive fine without the control unit ( technically same as just now as your abs dont wont because of fault and obviously if you remove the control unit abs won't work but hydraulic unaffected).

One thing you need to know if you change the control unit ( even with one with sane part number) it will only look like it works 100% but you will find that the traction control doesn't work .
It will all look fine turn ignition o start car abs and traction light will go out if you push the traction control switch the traction light will go on and off accordingly but if you go on a loose surface you will find traction is permanently off ( no matter what dash says) only way to make it work correctly is to get the new module coded in to make the car happy.

But first things first fault code read.

Stephen.

 

[A&KOKJ]

Thank you so much for your informative reply, Stevo.

The mechanic I use has already run a diagnostic on it and he said that the computer can't talk to the ABS unit. He believes that the ABS is at fault. He's away until 2nd June so I can't speak to him again until then.

Thanks for all the info which I will keep for future reference.

Cheers

Adrian

 

[t-tony]

If your "Mechanic" has plugged his code reader into the socket under the dash (they all do because they don't know about the one under the bonnet), then it cannot "talk" to the ASC/ABS unit and as such it won't give the correct fault code(s).

Tony.

 

[Stevo7682]

No problem Adrian your welcome.

There is a potential fix for yours but come back to that as way not a given and involves cutting the sealed module apart done it to my Dakar about 5yr ago sealed back together been fine since but got a spare uncoded module here.


Firstly now get another control unit.

My 1.9 is covered up just now my 2.8 tu pre face-lift has the later abs pump ( same style as yours) .
Unfortunately the 2.8 engine bay is a bit tight compared to the 1.9 so this is was kinda the best picture i could get of my module as you can see part number on front of it so you can match it.
On left side of pic top and bottom you can see 2 of the 4 mounting screws like i said you can take it off without affecting the hydraulic side of the brakes.

Stephen

 

[Stevo7682]

This is also true Tony.

Adrian check your man plugged his diag machine into the 20 pin obd adapter under the bonnet using a 16 to 20 pin adapter or as Tony says you will get communications issues if he has done that also check the abs fuses but as lights dash in power to system somwhere
When my pump module failed pretty sure chucked up a code for it .
If he used the 16 pin obd below steering only tell him to test again using 20 pin under the bonnet ( adapter easily available on ebay etc) before going any further as could still end up being a sensor still.
Stephen.

 

[A&KOKJ]

If your "Mechanic" has plugged his code reader into the socket under the dash (they all do because they don't know about the one under the bonnet), then it cannot "talk" to the ASC/ABS unit and as such it won't give the correct fault code(s).

Tony.

Thanks for the info. My mechanic is away until 2nd June so I will have a word with him when he returns.]

 

[A&KOKJ]

No problem Adrian your welcome.

There is a potential fix for yours but come back to that as way not a given and involves cutting the sealed module apart done it to my Dakar about 5yr ago sealed back together been fine since but got a spare uncoded module here.


Firstly now get another control unit.
View attachment 303247
My 1.9 is covered up just now my 2.8 tu pre face-lift has the later abs pump ( same style as yours) .
Unfortunately the 2.8 engine bay is a bit tight compared to the 1.9 so this is was kinda the best picture i could get of my module as you can see part number on front of it so you can match it.
On left side of pic top and bottom you can see 2 of the 4 mounting screws like i said you can take it off without affecting the hydraulic side of the brakes.

Stephen

Thanks for the further info, Stephen.

 

[Andyboy]

The 896/897 unit was used on later E36 and earlier E46 4 cylinder petrols (M43 engine) so they aren't really rare yet.