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ABS problems Q4

Posted: Wed Nov 06, 2019 1:06 pm
by finalfa
My ABS light is on, it looks like it passes self check, but as soon as i start driving, it lights up and stays lit.
I tried reading the error codes with my Marelli tester, and the only fault code that came up was Fehler Steuergeraet, which would mean that the ECU is faulty. Then it says that Systemzustand 6km/h, ABS nicht aktiv. Does anyone have experience with something like this, or ideas on where i should be looking?
Many thanks. :cry:

Re: ABS problems Q4

Posted: Wed Nov 06, 2019 2:16 pm
by AlfaWhiz
From my experience ABS faults an be electric related. Have a look at my thread, I also had the light on albeit without any clear cause, after many years of struggle I fixed it by cleaning the connections between the main ABS fuse and its holder: viewtopic.php?f=2&t=1427

Re: ABS problems Q4

Posted: Wed Nov 06, 2019 2:50 pm
by finalfa
AlfaWhiz wrote:
Wed Nov 06, 2019 2:16 pm
From my experience ABS faults an be electric related. Have a look at my thread, I also had the light on albeit without any clear cause, after many years of struggle I fixed it by cleaning the connections between the main ABS fuse and its holder: viewtopic.php?f=2&t=1427
Thanks, will have a closer look. Think i will start by cleaning all the connections and do some measurements. Is the main ABS fuse in the ABS unit or where is it? I am a little bit lost with all the fuses in the ABS system...

Re: ABS problems Q4

Posted: Wed Nov 06, 2019 3:06 pm
by AlfaWhiz
As I remember it differs between versions, main fuse on mine was under the hood on the firewall, near the coolant reservoir, just stuck on there. I think there should be some photos in the other thread but in case you don't find it let me know and maybe I'll dig out some more photos. I know it can be frustrating but definitely fixable. Good luck! 8)

Re: ABS problems Q4

Posted: Wed Nov 06, 2019 6:15 pm
by Alfan
AlfaWhiz wrote:
Wed Nov 06, 2019 3:06 pm
As I remember it differs between versions, main fuse on mine was under the hood on the firewall, near the coolant reservoir, just stuck on there. I think there should be some photos in the other thread but in case you don't find it let me know and maybe I'll dig out some more photos. I know it can be frustrating but definitely fixable. Good luck! 8)
Same location in mine and same fix :) The ABS problem when cleaning the fuse and plug (which was enough) was another one, but with a corroded connection, you can surely get different error codes.

Your car has sat a while, so cleaning connections is a good idea, anyway :P

Re: ABS problems Q4

Posted: Wed Nov 06, 2019 6:23 pm
by finalfa
Alfan wrote:
Wed Nov 06, 2019 6:15 pm
AlfaWhiz wrote:
Wed Nov 06, 2019 3:06 pm
As I remember it differs between versions, main fuse on mine was under the hood on the firewall, near the coolant reservoir, just stuck on there. I think there should be some photos in the other thread but in case you don't find it let me know and maybe I'll dig out some more photos. I know it can be frustrating but definitely fixable. Good luck! 8)
Same location in mine and same fix :) The ABS problem when cleaning the fuse and plug (which was enough) was another one, but with a corroded connection, you can surely get different error codes.

Your car has sat a while, so cleaning connections is a good idea, anyway :P
Sure sounds like an electrical fault like that. Will check fuses and connections when i'm at the workshop. Hopefully it's something as simple as that. Getting a headache just thinking of trying to get my ABS light turned off for the finnish technical inspection coming up. :oops: Airbag and ABS still to go... Taking one issue at a time.