Flashing Cab top Light

[donaldoc3]

Parked my 2000 cab and when I tried to put the top up all i got was a flahing cab top light on the dash. Checked the parking brake and made sure the engine compartment lid was shut and still a flashing light but no top movement at all. i checked all of the fuses and they are all good. I hear the relay click when i push the rocker switch but still nothing other than the flashing light. Any ideas?

[Loren]

You are likely going to need a PST2 or PIWIS to see which microswitch is not closing (or opening) that is causing the fault.

[donaldoc3]

You are likely going to need a PST2 or PIWIS to see which microswitch is not closing (or opening) that is causing the fault.

Hi Loren, i knew i could count on you to reply! Is the flashing light indicative of anything in particular? I cannot find any reference to a flashing light only to steady light. Since i hear the relay in the cab top control unit click should i assume that all non-top related microswitches are operable; such as parking brake, etc? I do not have access to a PST2 but i thought to check some pinouts on the connectors.

[Loren]

You are likely going to need a PST2 or PIWIS to see which microswitch is not closing (or opening) that is causing the fault.

Hi Loren, i knew i could count on you to reply! Is the flashing light indicative of anything in particular? I cannot find any reference to a flashing light only to steady light. Since i hear the relay in the cab top control unit click should i assume that all non-top related microswitches are operable; such as parking brake, etc? I do not have access to a PST2 but i thought to check some pinouts on the connectors.

Well, a PST2 or PIWIS will tell you what motor or microswitch is failing to respond.

Without it you are just guessing. here is a list of what the tool can check/test.

[wross996TT]

Since i hear the relay in the cab top control unit click should i assume that all non-top related microswitches are operable; such as parking brake, etc? I do not have access to a PST2 but i thought to check some pinouts on the connectors.

No this is a bad assumption....easily could be the brake sensor....like Loren says, get it scanned.

[donaldoc3]

Took the car to Porsche and you were right about the tool, it is the coolest thing. They can actuate the lid, flaps top everything right from the laptop.

2 Porsche hours later they realized that there wasnt enough fluid which surprised me because nothing moved when i hit the button, not even the electric motors.

Anyway it was an expensive lesson to remember to check fluids!

Thanks for your help and suggestions, this site is great!

[Loren]

Glad you got it fixed!

[Peter Serbanica]

If you had to add fluid, perhaps the cylinders are leaking.

[Izzy]

It is not that uncommon of a problem. See here for future reference:

http://www.renntech.org/forums/index.php?showtopic=6967