Turns on, engine won’t start, then won’t turn off
09-29-2019, 05:34 PM
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Turns on, engine won’t start, then won’t turn off
After a heavy rain this past weekend, I go to start my 2011 g37x sedan. Drove it about 10 miles, parked it, nothing unusual.
9 hours later I go to start it, it goes to ON, doesn’t even try starting the engine. If I push the push button again, it won’t turn off at all.
Radiator fan comes on
Headlights turn on but the headlight stalk won’t turn off the headlights, windshield wipers don’t work.
Radio works, windows roll up and down, etc.
In order to turn the car off I had to unplug the battery.
there was a bit of moisture on the passenger side floor under the floor mat. I pulled the carpet, scooped out the water, and am just letting everything air dry.
9 hours later I go to start it, it goes to ON, doesn’t even try starting the engine. If I push the push button again, it won’t turn off at all.
Radiator fan comes on
Headlights turn on but the headlight stalk won’t turn off the headlights, windshield wipers don’t work.
Radio works, windows roll up and down, etc.
In order to turn the car off I had to unplug the battery.
there was a bit of moisture on the passenger side floor under the floor mat. I pulled the carpet, scooped out the water, and am just letting everything air dry.
09-29-2019, 06:47 PM
#2
Either the infamous sunroof drain and/or the firewall grommet (under the battery) gremlin(s) have surfaced. Very common issue for our cars. Not the easiest to repair but doable for the home mechanic.
Check all of the wiring/connectors at the BCM (passenger side outer kick panel). Make sure everything is bone dry BEFORE reconnecting the battery.
Check all of the wiring/connectors at the BCM (passenger side outer kick panel). Make sure everything is bone dry BEFORE reconnecting the battery.
09-29-2019, 07:02 PM
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Either the infamous sunroof drain and/or the firewall grommet (under the battery) gremlin(s) have surfaced. Very common issue for our cars. Not the easiest to repair but doable for the home mechanic.
Check all of the wiring/connectors at the BCM (passenger side outer kick panel). Make sure everything is bone dry BEFORE reconnecting the battery.
Check all of the wiring/connectors at the BCM (passenger side outer kick panel). Make sure everything is bone dry BEFORE reconnecting the battery.
the wiring looks as it should so I’m assuming something is just wet and being spastic. Luckily I don’t have to work until tomorrow afternoon, so I’m gonna let it air out.
09-30-2019, 11:16 AM
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Just wanted to follow up, I left the battery disconnected overnight and left the passenger side carpet and kick panel trims pulled so the wiring could dry. When I reconnected it this morning and tried to start it, it fired right up and everything was back to normal.
09-30-2019, 11:32 PM
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Yeah, not looking forward to tackling that. I have a feeling it disconnected at the firewall.
Problem came back today, wouldn’t start, would only go to ACC. I was able to turn it off with the push button though.
Disconnected battery for 30 mins, reconnected, started right up. But this time it wouldn’t shut off, had to pull both MAF sensors to stall out the car.
Problem came back today, wouldn’t start, would only go to ACC. I was able to turn it off with the push button though.
Disconnected battery for 30 mins, reconnected, started right up. But this time it wouldn’t shut off, had to pull both MAF sensors to stall out the car.
10-02-2019, 01:38 PM
#7
Yeah, not looking forward to tackling that. I have a feeling it disconnected at the firewall.
Problem came back today, wouldn’t start, would only go to ACC. I was able to turn it off with the push button though.
Disconnected battery for 30 mins, reconnected, started right up. But this time it wouldn’t shut off, had to pull both MAF sensors to stall out the car.
Problem came back today, wouldn’t start, would only go to ACC. I was able to turn it off with the push button though.
Disconnected battery for 30 mins, reconnected, started right up. But this time it wouldn’t shut off, had to pull both MAF sensors to stall out the car.
The sunroof drain isnt hard, a set of 6in+ needle nose pliars, some aquarium tubing and silicone caulk goes a looong way.
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MStrike (10-27-2020)
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02-21-2020, 11:00 PM
#8
Problem resolved?
Did this problem ever get resolved? I have a G35 doing the same thing. Both sunroof drains leaking. Car wouldn’t turn off. Car finally turned off when I disconnected the battery and hit the start/stop button. Now car won’t restart. Yellow key light is on. The car goes to “on” on the start/stop switch. Press it and it goes off for a few seconds and comes back on lighting up the entire dash. Everything seems to be working as it should, the car just won’t start. The radiator fan is running constantly at low levels and there’s a high pitched noise I can’t isolate. Help!!!
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MStrike (10-27-2020)
10-27-2020, 10:12 PM
#9
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After a heavy rain this past weekend, I go to start my 2011 g37x sedan. Drove it about 10 miles, parked it, nothing unusual.
9 hours later I go to start it, it goes to ON, doesn’t even try starting the engine. If I push the push button again, it won’t turn off at all.
Radiator fan comes on
Headlights turn on but the headlight stalk won’t turn off the headlights, windshield wipers don’t work.
Radio works, windows roll up and down, etc.
In order to turn the car off I had to unplug the battery.
there was a bit of moisture on the passenger side floor under the floor mat. I pulled the carpet, scooped out the water, and am just letting everything air dry.
9 hours later I go to start it, it goes to ON, doesn’t even try starting the engine. If I push the push button again, it won’t turn off at all.
Radiator fan comes on
Headlights turn on but the headlight stalk won’t turn off the headlights, windshield wipers don’t work.
Radio works, windows roll up and down, etc.
In order to turn the car off I had to unplug the battery.
there was a bit of moisture on the passenger side floor under the floor mat. I pulled the carpet, scooped out the water, and am just letting everything air dry.
04-03-2022, 07:35 PM
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Having the same problems
Having the same issues as discussed in the thread. My difference is there hasn’t been rain for a little and no known drainage issues. Did anyone figure out what is going on? I know this is an older thread. Thanks
correction: the carpet is in fact soaked under the floor mat
correction: the carpet is in fact soaked under the floor mat
Last edited by Daltonh10; 04-03-2022 at 07:46 PM.
06-02-2022, 08:46 AM
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Having the same issues as discussed in the thread. My difference is there hasn’t been rain for a little and no known drainage issues. Did anyone figure out what is going on? I know this is an older thread. Thanks
correction: the carpet is in fact soaked under the floor mat
correction: the carpet is in fact soaked under the floor mat
how did u get it fixed ?? Did u ever find a solution?
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