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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 03-23-2015, 11:11 AM   #1
M3J0N
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PDC sensor bad

Have an 05 m3 with smg. One of the rear PDC sensors is bad. is there any way to diagnose which one it is? thanks.
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Old 03-23-2015, 02:44 PM   #2
iansevilla
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Easy. Just turn on ignition and leave on reverse then check each one if it will make sound? I did that on mine.
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Old 03-23-2015, 03:48 PM   #3
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that doesn't work... the chime stays on in reverse for about 10 seconds, then shuts down the system completely..
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Old 03-24-2015, 03:47 AM   #4
flyride1
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Find someone with DIS/GT1, it will tell you which one is bad. You can also unplug one at a time and the system shouldn't shut down when you find the bad one.
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Old 03-26-2015, 11:43 AM   #5
M3J0N
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gotta remove the rear bumper to do this, right?
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04 M3/2/6 Carbon Black/Black (Sold)
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95 M3/2/5Avus/Dove Grey 3.2L Swap (Current)
90 M3/2/5 Diamond Black/Black 3.0L Swap (Current)
96 M3/2/5Estoril Blue/Black (Current)
01 325iT Wagon Auto Titanium Silver/Red Sport (Current)

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