G37 Coupe V36 2008+ Discussion about the G37 Coupe

Computer issues after heavy rain

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Old 03-03-2019, 08:16 AM
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Computer issues after heavy rain

Hi Gents,
Strange issue with my G. After it rains, the car stops sensing the key. First time it happened, it eventually started but stayed in 1st gear and WOULDN'T shut off. I drove slowly to nearest mechanic who stopped it somehow and charged $700 for 3 hour check of all modules.
A month later, same issue. This time had it towed to dealer. They found no water leak issues or module problems. Replaced few battery cables and harness near battery. $800 charge.
Two days later, same ****. I also notice very high pitch constant beep near battery with engine off. Planning to tow it back to dealer and make a scene.
 
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Old 03-03-2019, 09:17 AM
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Check your IPDM for flooding.
 
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Old 03-03-2019, 11:35 AM
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Yep, definitely sounds like the IPDM is wet. Cover probably didn't get put on correctly or your cowl drain (area around the wipers) is plugged and not draining water so it ends up on the IPDM.
 
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