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Dumb Question re. PSM


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This may be a dumb question, but is there a way to tell if PSM is kicking in? On all my other cars (BMW, M-Benz) the orange indicator in the dash display lights up when the electronics kick in. So far, I either have not had it activated (which I doubt) or there is no sign to confirm that it has interfered.

Edited by bavarian
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I know there is a yellow light which warns when the PSM is off. Is this supposed to flash when the PSM engages? Mine never has, and I'm sure I've been in slippery conditions when some electronic override took place...(I also have LSD)

Edited by bavarian
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You cannot have an LSD with PSM unless you installed it aftermarket as they are not compatible.

There is an indicator light in the dash that lights when PSM activates. Check your manual. The whole car will shudder when PSM activates. Kind of like ABS but you will feel it in the seat of your pants and through the steering wheel. The activation limits for PSM are quite high. If you want to feel it then put your car on a skid pad.

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You cannot have an LSD with PSM unless you installed it aftermarket as they are not compatible.

There is an indicator light in the dash that lights when PSM activates.  Check your manual.  The whole car will shudder when PSM activates.  Kind of like ABS but you will feel it in the seat of your pants and through the steering wheel.  The activation limits for PSM are quite high.  If you want to feel it then put your car on a skid pad.

That's what I thought--as it turns out my MY '04 C4S cab does have PSM and LSD (option 220) as a factory option--see a previous post where Loren discovered this.

Highexplosive--your experience caused me to post this thread, and seems to bear out my observation that there is no indication on the dash to alert me to the PSM kicking in. I wonder if there has been a change in the software?

Edited by bavarian
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Check this thread

http://www.renntech.org/forums/index.php?showtopic=3787

B&M SSK Installed--a few questions

BTW I just spoke to Porsche service, and they tell me that the light on the dash will come on, but that the C4S has such high limits that it would take rather extreme situations (such as tracking the car and drifting) before the PSM kicks in. That seems to answer my question, especially since the tech was speaking from experience with his C4S.

Edited by bavarian
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I still do not see how an LSD and PSM would work together. I think I will post that to PCNA.

PSM limits are quite high. When it kicks in you will know. As I said earlier if you want to experience what it is like put your car on a skid pad.

The light does work. I have seen it lots of times. :D

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