fullymatted.
Back to search
PistonHeads

987C.1 Traction Control Off on Icy Roads? - Page 1 - Boxster/Cayman - PistonHeads UK

Add to repair workspace
Open repair workspace
Original source
7 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH987C.1 Traction Control Off on Icy Roads? - Page 1 - Boxster/Cayman - PistonHeads UK

Leading reported evidence

Install winter tyres, however, i haven't found it necessary

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

Since I've fitted winter tyres, however, I haven't found it necessary.

987C.1 Traction Control Off on Icy Roads? - Page 1 - Boxster/Cayman - PistonHeads UK
Read full discussion summary

Leading evidence: 'Install winter tyres, however, i haven't found it necessary' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install winter tyres, however, i haven't found it necessary' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

Read captured replies

1 matching discussions · 7 captured posts examined · 1 partial discussions

Frequently discussed actions (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Install winter tyres, however, i haven't found it necessary

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

Since I've fitted winter tyres, however, I haven't found it necessary.

987C.1 Traction Control Off on Icy Roads? - Page 1 - Boxster/Cayman - PistonHeads UK
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • PistonHeads: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T194705Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I live on a hill surrounded by hills. These hills are rarely salted or treated in any way. I'm planning to swap over to winter tyres this weekend but am wandering whether traction control is best switched off on potentially icy roads? I had a Jag with a reasonably crude TC system which would grab a brake if it sensed any slip making a bad situation (slight slip on ice) a whole lot worse and unpredictable. It would automatically grab a brake without warning in one instance sending 17ft of car very sideways across the road.... Many thanks for your thoughts

POST 2Original post

When I was on summer tyres I used to switch the psm off on icy hills to assist getting to the top without having the power cut all the time. Since I've fitted winter tyres, however, I haven't found it necessary.

POST 3 / ORIGINAL POSTEROriginal post

Thanks, so we just think PSM cuts power, it doesn't apply brakes?

POST 4Original post

you need PSM on that's what's its for :-) http://youtu.be/kSmZ3Y5fMTo goto 3 minutes in, the guys have no control on the ice hill when PSM is OFF

POST 5Original post

jcelee said: Thanks, so we just think PSM cuts power, it doesn't apply brakes? I'm fairly certain it applies the brakes too. I'm not advocating switching the PSM off unless absolutely essential, but sometimes in order to get up a steep hill on summer tyres, I found it the only way.

POST 6Original post

jcelee said: I live on a hill surrounded by hills. These hills are rarely salted or treated in any way. I'm planning to swap over to winter tyres this weekend but am wandering whether traction control is best switched off on potentially icy roads? I had a Jag with a reasonably crude TC system which would grab a brake if it sensed any slip making a bad situation (slight slip on ice) a whole lot worse and unpredictable. It would automatically grab a brake without warning in one instance sending 17ft of car very sideways across the road.... Many thanks for your thoughts Slow controlled, up-hill on black ice? PSM needs be off. Deep snow? PSM off. All other situations, PSM ON. Demon - did you not take basic lessons at Porsche centre Silverstone? ) None of the above apply if your name ends in 'Rance' as PSM is 'off' at all times

POST 7 / ORIGINAL POSTEROriginal post

The issue I've experienced in the past (not in the Cayman yet) was patches of black ice going down hill. The issue with automatic braking here is that it turns a small slip into a much larger and sudden slide. Am I right to assume then that PSM is smart enough not to jam on a brake when it detects slight loss of traction because of ice?

This is a source reference. Confirm exact model applicability in the original material.