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Old 10-15-2016, 07:37 AM
jd_in_ky jd_in_ky is offline
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Location: Kentucky
Join Date: Oct 2016
Posts: 2
Mein Auto: 2004 X3
P3240 and engine no start/no crank

Hello all. I have read a lot about P3240 error code (MAP thermostat open circuit). My question is has anybody experienced that this would lock out the ignition system and prevent the starter from cranking? I have been having intermittent start problems all summer, I have already changed the battery, changed the starter (not a fun job, especially after I realized that wasn't even the problem), checked all the fuses and relays, and even bought a new key for $250 after it was suggested that the transponder in the old one was bad.

I have noticed that the car usually started fine from a cold start, then would not start after warming up. Now it just won't start at all. You turn the key, the dash lights up, the battery is good, but no cranky.

I don't mind to replace the thermostat, but it seems like I have just been throwing money and time at this problem and I wanted anybody with the same experience to weigh in.

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