Abs and brake light on

Tomtom3105 · 21-02-2021 6:39pm #1

Anyone on here any ideas about this, had a small tip December with my audi a4 08 and since them the parking brake and abs sensor is on and off when it suits itself although more on than off I noticed today that the car gives a little jolt at times and then the lights go off. I haven't changed the sensor yet but I'm wondering now is it more likely something different at that seems above a faulty sensor issue. The parking brake and brakes are working fine despite the light

Dirty Nails · 22-02-2021 8:54pm

Tomtom3105 wrote: »

Anyone on here any ideas about this, had a small tip December with my audi a4 08 and since them the parking brake and abs sensor is on and off when it suits itself although more on than off I noticed today that the car gives a little jolt at times and then the lights go off. I haven't changed the sensor yet but I'm wondering now is it more likely something different at that seems above a faulty sensor issue. The parking brake and brakes are working fine despite the light

One mans small tip is another mans write off

Did it get loom damage?

How do you know which sensor to change?

Tomtom3105 · 22-02-2021 9:10pm

Dirty Nails wrote: »

One mans small tip is another mans write off
Did it get loom damage?

How do you know which sensor to change?

I changed the one where the damage was,drivers side because I cracked the stub axle there, that was the main damage or so i thought..... Since I wrote this I was driving it it gave a little jolt threw the lights off and they haven't come back on yet. How would you tell if it got loom damage?

Dirty Nails · 22-02-2021 10:42pm

Tomtom3105 wrote: »

I changed the one where the damage was,drivers side because I cracked the stub axle there, that was the main damage or so i thought..... Since I wrote this I was driving it it gave a little jolt threw the lights off and they haven't come back on yet. How would you tell if it got loom damage?

Get ya. Not always easy see loom damage - just look/feel along the wires for marks anywhere you think they might have got pinched in the tip.Intermittent faults are often a bustard to find,I'd get someone to try reading the memory in that. It might,at least,point you the right direction. What you called the H/B light - has it a (!) or a (P) symbol? Seems unlikely that handbrake light would be on for an Abs fault.

Tomtom3105 · 22-02-2021 11:06pm

(P) its both the parking brake and the abs according to the onboard computer.

pippip · 23-02-2021 10:54pm

Check your brake fluid, can throw errors when low.

kadman · 24-02-2021 12:22pm

The little jolt that turns on and off both ABS and brake light sounds like the ABS kicking in and out.

Takes quite a jolt to crack a stub axle. Did you change the ABS lead and toothed ring or magnetic bearing?

TheBoyConor · 24-02-2021 3:07pm

There might not be any visible damage on the loom. I have seen a loom that looked perfect but it had been stretched and wires had snapped inside the insulation so you wouldn't know but it was perfect.

Sometimes the only fix is to replace a whole wiring harness. However, for a 08, that will probably be a write off economically.

Tomtom3105 · 24-02-2021 5:57pm

kadman wrote: »

The little jolt that turns on and off both ABS and brake light sounds like the ABS kicking in and out.

Takes quite a jolt to crack a stub axle. Did you change the ABS lead and toothed ring or magnetic bearing?

Nope just the axle and the track rod and tie rod and the sensor. It was a belt like do you think other stuff needs to be changed ?

Tomtom3105 · 24-02-2021 5:59pm

kadman wrote: »

The little jolt that turns on and off both ABS and brake light sounds like the ABS kicking in and out.

Takes quite a jolt to crack a stub axle. Did you change the ABS lead and toothed ring or magnetic bearing?

How do I fix the abs kicking in and out what needs replacing?

greasepalm · 24-02-2021 6:03pm

Did you have the codes read and cleared or just replacing things.

Tomtom3105 · 24-02-2021 7:19pm

greasepalm wrote: »

Did you have the codes read and cleared or just replacing things.

Just replaced the things that were broken.

greasepalm · 24-02-2021 8:55pm

You might have to get codes read and cleared as it can point to something else maybe like a brake light switch?

kadman · 25-02-2021 12:59am

I have worked on cars that had intermittent faults on poor abs leads. Your one took enough of an impact to
crack a stub axle.
Definitely the lead and sensor now needs checking and maybe replacing.

If its magnetic ring on the bearing for the ABS, then a magnet can alter its effectiveness from an impact.

As its ABS problems I would have thought a code readout would have been the first thing to check for,

as correctly stated already by another poster.

If you are going to replace the ABS lead on the damaged side, replace the 2 from the same manufacturer.

I myself have fitted new, but different manufactured cables to my own car, and ending up spending weeks to finally

diagnose a mis match of differing new cables. Once they were paired like with like, it was perfect.

I agree that codes need to be read first . You can buy a card to check the bearing magnet on the hub if it is a magnetic setup.

Tomtom3105 · 25-02-2021 1:03am

Perfect. Thanks

kadman · 02-03-2021 10:04am

Any luck with your ABS light problems:)

Tomtom3105 · 03-03-2021 7:51pm

kadman wrote: »

Any luck with your ABS light problems:)

Going at it this weekend will let you know ðŸ˜Š

Tomtom3105 · 08-03-2021 1:26pm

kadman wrote: »

Any luck with your ABS light problems:)

Changed the sensor lights went out, whether they stay out is another thing heres hoping

greasepalm · 08-03-2021 2:28pm

But did you not get the codes read / erased?

Tomtom3105 · 08-03-2021 3:23pm

greasepalm wrote: »

But did you not get the codes read / erased?

Nope if the lightd come back on i will have to though i just put the senor on and and wait and see what happens.

greasepalm · 08-03-2021 3:35pm

Hmm my reading on this brakes may not work as expected ??

Hopefully others can have their say on this.

Abs and brake light on

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