ABS/PSM Failure Question
#1
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Hi Everyone, since I'm very new to 996 I've made an apt for Monday to have my local dealer diagnose the failure I'm seeing displayed on the dash; ABS/PSM Failure Drive to Workshop. Out of curiosity how does the dealer go about diagnosing this issue beyond the OBD tool? Do they use an addl software program (Can't remember the name) I've heard about to pinpoint the problem area? Thanks, Ralph
#2
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Same exact thing happened to me last month. Still haven't brought it in for service. I've been told it's likely a MAF sensor or brake switch. No idea how it's diagnosed.
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ok, good thoughts and thanks guys. I'll report back what the dealer finds on Monday. At the time it happened I also got a Check Engine light and read out a code on the OBD port that indicated low air flow so I took apart the MAF Sensor cleaned it along with the air filter. I discovered a big pile of leaves on the intake side of the filter that was probably slowing down the flow (my guess) because after I put it all back together I was able to clear the code and extinguish the light. Ralph
#7
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Here is a short list of what you can check at home;
A switch on the brake pedal can fail
A bad brake light bulb can cause this (so I've read) even one in the third brake light
A failed brake fluid level sender
Brake fluid level low
Possible blown fuse? check fuse cover? for location of fuse, or is it in the owners manual?
A switch on the brake pedal can fail
A bad brake light bulb can cause this (so I've read) even one in the third brake light
A failed brake fluid level sender
Brake fluid level low
Possible blown fuse? check fuse cover? for location of fuse, or is it in the owners manual?
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#8
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Good advice, thanks. Brake lights are good, don't have a clue as to how to check the brake fluid sender but the level I can take care of! At least I can check off a few things on your list so we'll see. Either way it'll be an interesting first experience at the dealer on Monday should I still have to have the service call! R.
#10
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This has been well and thoroughly discussed over on Pelican.
http://forums.pelicanparts.com/porsc...lem-cured.html
probable causes are the brake pedal switch or the MAF sensor.
cheap and easy to fix
http://forums.pelicanparts.com/porsc...lem-cured.html
probable causes are the brake pedal switch or the MAF sensor.
cheap and easy to fix
#11
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Had this, you just have to check if you brake lights work, if they do not it is the brake light switch. Cheap part, $20 at an OPC, easy to DIY.
part number 996.613.113.02
part number 996.613.113.02
#12
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Thanks Jasper, yes I used that Pelican thread to help me clear the code I got (Low Air Flow) and how to clean the MAF Sensor but of course I still have the ABS/PSM Failure indicators. When we last checked I did have all 3 brake lights but will make sure before going to the dealer. R.
#14
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OPC = Official Porsche Centre. I got this error sporadically, so if the error on the dash goes away it is not a total malfunction and the break lights will work. My symptoms were, error on dash, ABS/PSM lights on. stopped the car, got worried, restarted all was fine. This happened a couple of times, and only when the error occurred did I notice the lights.