S320 BAS & ESP warning lamps

Zeppelin

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I have a 2001 S320 that has an ESP and BAS warning on the dash.
Replacement of the parking switch normally fixes this in most cases, I have had that done but it has not cured the problem.

It has now been on the Star diagnostics at a specialist and he tell me it has a canbus error and it may be down to a fault with the gear selector switch or the ignition switch??

Seems very odd...Not sure where to go from here??
 

television

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I cannot believe this, does the guy know how to use STAR

I think more a BAS fault only as ESP cannot work without BAS
 
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Zeppelin

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He did not seem to want to investigate it any further, maybe he just wants the easy jobs??

I sometimes get the parking sensors flick on and a beep when coming to a stop at a junction, may this be related?

The Esp & Bas error is intermittent and does not show all the time.
 

television

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There must be a BAS fault code logged, like brake travel sensor
 
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Zeppelin

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No codes given, he has just written the following -

Notes: Ignition fault possible electronic ignition switch and transmission selector module can lines.
 

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OK the EIS is the master of the CAN, but so many things and never I think the EIS. OK it could be a CAN fault, but you need to go to the CAN circuits to see what is going on.

I do think that he did not wants the job, there has to be a fault listed, that is the thing
 

m3gt2

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Is this switch a common cause of this error then? I have had it 4 times in a week but twice today I assume the switch is under the dash, above the parking brake? Thanks
 

television

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The parking brake switch can do this, and cheap to try but there are other things
 

m3gt2

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Thanks, I think I will give it a shot for the sake of a few quid!
 

television

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£12 and dead easy to change :D
 
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Zeppelin

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Any suggestions as to where I go from here Television?
Many thanks for you input on this :)
 

television

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I think a better indie with STAR, these things are not that easy without a direct code.
 

danbert748

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It's my first post, so bear with me....

I had a very similar fault on my 1998 E320 - BAS and ASP warnings, followed by other seemingly unrelated faults. I replaced the battery - no more warnings. A failing battery can affect the electronics. May be worth a try if you haven't replaced the it recently.
 


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