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Old 07-01-2008, 02:37 PM   #1
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Tire pressure monitoring...

My car now has about 2500 miles on it and I get a warning when I start it up that my front right tire is low by -4. However, when I look at the reading for all four tires they show equal or a small variance by a pound or 2, but never by 4. They have always changed a little due to road surface, temperature, etc. My dad even took a guage and checked my tire pressures and added a little air. Nothing was down by 4 though. Still, when I start the car it gives me a warning that the front right is down by 4. It's always the same, front right, -4.

I called the service department and they said the sensor could be bad. Needless to say, I'm not too excited at the thought of taking a day off work and taking my 3-month old car in to be looked at. Has anyone had this problem or are familiar with it? I'm wondering if it's just something that got tripped that will reset itself after a bit.
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Old 07-01-2008, 05:02 PM   #2
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Chances are the sensor in your wheel is faulty. I doubt it will just go away or reset. The sensor is connected to the valve stem, sits inside the wheel, and sends a signal to your TPM. It's about the size of a thumb drive for your computer. When you think about the harsh environment it lives in, it's kind of amazing it works so well.

So why not make an apointment and drop your baby off? This might be the first time strangers will be examining it, but probably not the last. They'll give you a loaner and the repair will be free. You paid good $$$ for you baby, why not have it in perfect condition? Just be sure to tell them to be careful with those gorgeous rims.

2500 mi in 3 mo? Not bad. I've got 6500 in 6 mo.
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Old 07-01-2008, 05:59 PM   #3
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Shoot, that poor little sensor has probably melted in all this heat. I guess I'll take it in. They sure didn't mention anything about a loaner car when I called though.
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Old 07-01-2008, 06:06 PM   #4
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Quote:
Originally Posted by LoveBunny
Shoot, that poor little sensor has probably melted in all this heat. I guess I'll take it in. They sure didn't mention anything about a loaner car when I called though.
Call again. It's part of the Certified Used Porsche program, I'm sure it's part of the new car warranty. If you don't ask for and reserve a loaner, they may be able to weasel out of it.
Tell them if they don't give you a loaner, you'll shove them in your frunk!!
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Old 07-03-2008, 05:32 PM   #5
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Well, I might have to shove the whole dealership in my frunk. I was told they don't have a loaner fleet.
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Old 07-03-2008, 05:47 PM   #6
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Try adding a few pounds first. These things can be very touchy sometimes
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Old 07-10-2008, 09:18 AM   #7
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Built in tire sensors? Man, have we become lazy wimps... ...whats next? self parking..jeez..

I still check my 4 tires manually.
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Old 07-10-2008, 10:32 AM   #8
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Built in tire sensors? Man, have we become lazy wimps... ...whats next? self parking..jeez..

I still check my 4 tires manually.

I think this is becoming federally mandated soon, partially due to the Ford Explorer & Firestone tire blowout issues from a few years ago.
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Old 07-10-2008, 02:28 PM   #9
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See, the problem is when I checked them manually they were correct, at least according to what is listed in my door panel. But apparently that's not the correct pressure according to the computer. It really is so confusing to me I wish I could just manually check my tires and not be bothered with it.
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