Traction control light flashing... a *lot*
Traction control light flashing... a *lot*
Author
Discussion

BingoBob

Original Poster:

1,098 posts

177 months

Thursday 7th August 2014
quotequote all
Hello.

I took my V8V for a spin yesterday and noticed that the traction control / stability control light was flashing rather frequently. Almost every bend in fact, even when driving sedately.

It definitely never used to do this. It would only flash when giving it beans.

The suspension feels fine, the front tyres are quite old and will need changing soon, but I can't think why this would affect it?

Any ideas gratefully received.

Thanks!

downr

3,807 posts

158 months

Thursday 7th August 2014
quotequote all
Two possibilities

a) its broken
b) you are Lewis Hamilton (I claim my £5) and your definition of taking a bend "sedately" is somewhat faster than the rest of us

HTH smile

Jon1967x

8,184 posts

154 months

Thursday 7th August 2014
quotequote all
Are you sure it's the traction control? I had a warning light come up on in corners and it turned out to be low coolant. The info screen thing flashed up a message at the same time but as tricky to see.

BingoBob

Original Poster:

1,098 posts

177 months

Thursday 7th August 2014
quotequote all
Definitely traction control. The symbol of a car with the wavey skidmarks coming out the bottom.


mikey k

13,074 posts

246 months

Thursday 7th August 2014
quotequote all
It is a weird system on the Aston
Talking to BR it seems it does actually intervene BEFORE the light comes on
When it does this it starts to cut power and applies one or both rear brakes
Both my roadsters have done a set of rear pads in 13k miles because of it frown
Worn front tyres won't help as it will promote understeer
Poor geometry could also make a difference
I found switching to the PSS from the OEM RE050 tyre also made a difference
On our recent Euro trip I also switched the DSC to track mode which helped but can only be done on the later cars

BingoBob

Original Poster:

1,098 posts

177 months

Thursday 7th August 2014
quotequote all
^Interesting. The front tyres are worn unevenly across the tread (more wear on the inside) which makes me think of a tracking problem, but my dealer said this was normal for a V8V.

Maybe I'll get the geometry done when I get some new tyres on the front.

I guess my biggest concern is a leaking suspension strut, but the suspension feels fine. It might need to get worse before it becomes obvious to me, though.

/edit: Don't know if I can put mine in track mode. It's a 2010 V8V. I'll have to look in the manual.

Edited by BingoBob on Thursday 7th August 10:03

BingoBob

Original Poster:

1,098 posts

177 months

Thursday 7th August 2014
quotequote all
Also, another thought: the rear tyres are new. Could the difference in rolling radius be affecting the traction control?

mikey k

13,074 posts

246 months

Thursday 7th August 2014
quotequote all
BingoBob said:
^Interesting. The front tyres are worn unevenly across the tread (more wear on the inside) which makes me think of a tracking problem, but my dealer said this was normal for a V8V.

Maybe I'll get the geometry done when I get some new tyres on the front.

I guess my biggest concern is a leaking suspension strut, but the suspension feels fine. It might need to get worse before it becomes obvious to me, though.
IME geo makes a MASSIVE difference to the handling of RWD cars
Inside edge wear is normal IF you do a lot of Mway and straight A roads drives.
I've never see it on my RWD cars wink I always see even front tyre wear and a slight bias to the inside edge on the rears
But then I regularly do the geo and like to "make progress" wink

mikey k

13,074 posts

246 months

Thursday 7th August 2014
quotequote all
BingoBob said:
Also, another thought: the rear tyres are new. Could the difference in rolling radius be affecting the traction control?
It would have to be a fair way out and often screws with the ABS system when it is an issue
I use this site for offset and diameter checks

http://www.1010tires.com/Tools/Tire-Size-Calculato...


AMDBSNick

7,221 posts

192 months

Thursday 7th August 2014
quotequote all
mikey k said:
IME geo makes a MASSIVE difference to the handling of RWD cars
Inside edge wear is normal IF you do a lot of Mway and straight A roads drives.
I've never see it on my RWD cars wink I always see even front tyre wear and a slight bias to the inside edge on the rears
But then I regularly do the geo and like to "make progress" wink
^^^^^^^^^^this^^^^^^^^^^

Impasse

15,099 posts

271 months

Thursday 7th August 2014
quotequote all
What pressures are you running in your tyres? Have you checked them recently - rather than relying on the low pressure warning system.

BingoBob

Original Poster:

1,098 posts

177 months

Thursday 7th August 2014
quotequote all
Yes, I checked the pressures before taking the car out. They were spot in.

It's a good point, though, since when I had the rear tyres replaced the tyre shop put too much pressure in and the car handled horribly. I was amazed the difference incorrect tyre pressures made to the handing.

/edit: 2.3 and 2.5 bar front / rear from memory.

KarlFranz

2,008 posts

300 months

Thursday 7th August 2014
quotequote all
The Vantage is the first car I have ever owned that uses up the rear brake pads more than twice as fast as the fronts. You can witness this by how dirty the rear wheels get while the front wheels are still clean. That AM traction control must be pretty aggressive.

mikey k

13,074 posts

246 months

Thursday 7th August 2014
quotequote all
KarlFranz said:
The Vantage is the first car I have ever owned that uses up the rear brake pads more than twice as fast as the fronts. You can witness this by how dirty the rear wheels get while the front wheels are still clean. That AM traction control must be pretty aggressive.
Your rear wheels will be a lot clean on your new one if you put it in "track" mode wink

roughrider

997 posts

216 months

Thursday 7th August 2014
quotequote all
BingoBob said:
^Interesting. The front tyres are worn unevenly across the tread (more wear on the inside) which makes me think of a tracking problem, but my dealer said this was normal for a V8V.

Maybe I'll get the geometry done when I get some new tyres on the front.

I guess my biggest concern is a leaking suspension strut, but the suspension feels fine. It might need to get worse before it becomes obvious to me, though.

/edit: Don't know if I can put mine in track mode. It's a 2010 V8V. I'll have to look in the manual.

Edited by BingoBob on Thursday 7th August 10:03
An ineffective damper could cause the DSC intervention problem.

roughrider

997 posts

216 months

Thursday 7th August 2014
quotequote all
KarlFranz said:
The Vantage is the first car I have ever owned that uses up the rear brake pads more than twice as fast as the fronts. You can witness this by how dirty the rear wheels get while the front wheels are still clean. That AM traction control must be pretty aggressive.
Usually a sign that the car is being pushed into understeer regularly....

Simon T

2,157 posts

303 months

Thursday 7th August 2014
quotequote all
roughrider said:
Usually a sign that the car is being pushed into understeer regularly....
How does that work?


peterr96

2,226 posts

205 months

Thursday 7th August 2014
quotequote all
Do I vaguely recall something similar with a defective wheel speed sensor or wiring.
Incorrect rotation info would give rise to TC thinking bad things were happening.

Does it flash when you're not applying throttle?
Does it actually feel like it's spinning wheels?

SS972

591 posts

213 months

Friday 8th August 2014
quotequote all
Salut Ben,

does the light flashs in LH and RH bends at the same rate or one direction pops more flashs?I would steer my research toward the leaking thus ineffective damper.

A plus

roughrider

997 posts

216 months

Friday 8th August 2014
quotequote all
Simon T said:
How does that work?
Adding more steering as you apply power, generally equals understeer [occasionally oversteer depending on conditions, gear etc]. The cars DSC system will apply the inside rear brake to counteract the understeer. So, when we see a car that is wearing out rear brakes before fronts, it tells us about the way the car has been driven. You must unwind steering as you apply power, which means turning into corners later, to open out the exit.