ABS,ASC faults on BMW 523 se , help??!!

Joined: May 12, 2008 Posts: 2

Hi there

I have a bmw 523se and its been running fine for a good few years , its a 1997 model. I recently jumped into the car and started it up. I noticed on the ABS light and the ASC light was on, but the car was sounding ok, so I just drove it away, then while the car was moving I noticed the speedo wasnt working and it wasnt adding up the miles.

I drove it about without any other issues, but yesterday I heard a small beeping noise coming from the drivers side, where the battery is kept in the back of the car, it was a run of small beeps, about 10 , then silence, for about 5- 10 mins the it repeated the beeps.

I thought it was the ABS relay, but since my speedo isnt working I think its the speed control sensor. (how many sensors is there anyway??)

Can anyone advise, confirm or give me more info on the problem I have?

And if its the speed sensors, where are they located and are they easy to replace???

Any help would be greatful
Many thanks

John

External Since: Mar 12, 2005 Posts: 389

"johnboy245" <none.DeleteThis@000.com> wrote in message
news:1202935_a32fcb9d24b23e63130fc95a7dd8ed5f@autoboardz.com...
> Hi there
>
> I have a bmw 523se and its been running fine for a good few years ,
> its a 1997 model. I recently jumped into the car and started it up. I
> noticed on the ABS light and the ASC light was on, but the car was
> sounding ok, so I just drove it away, then while the car was moving I
> noticed the speedo wasnt working and it wasnt adding up the miles.

Some sensor isn't working, probably the propshaft one, but it could be a
wheel.

If you have satnav it goes bonkers too.

>
> I drove it about without any other issues, but yesterday I heard a
> small beeping noise coming from the drivers side, where the battery is
> kept in the back of the car, it was a run of small beeps, about 10 ,
> then silence, for about 5- 10 mins the it repeated the beeps.

In my case it was a mobile phone I had left in the glove compartment...

>
> I thought it was the ABS relay, but since my speedo isnt working I
> think its the speed control sensor. (how many sensors is there
> anyway??)

Typically one per wheel for ABS and one on or about the prop shaft for the
speedo.

>
> Can anyone advise, confirm or give me more info on the problem I have?
>
>
> And if its the speed sensors, where are they located and are they easy
> to replace???

ABS sensors are in the hubs and usually involve removing the wheel, disk and
hub. Check the wiring first, especially a connector block in the wheel
arch, which could have dirt ingress (e.g. after power washing).

>
> Any help would be greatful
> Many thanks
>
> John
>
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