My 2007 g35 recently stopped working first the battery went dead i tried to cut it on but the yellow key light came on only along with the red blinking security light I switched the bcm and the ipdm and it still isn’t working the steering wheel is locked. it’s throwing a code saying b210b and saying something about a starter control relay
I really need help I supposed to been back for college.?!!!!! Help please

 

please help please

 

You can't just put in a new BCM, it requires programming to match to the ECM. Put your old BCM back in since there was probably nothing wrong with it.

Yellow key light and flashing NATS indicator light usually means your car doesn't RECOGNIZE YOUR KEY. Probably just need to call a locksmith and have them reprogram your BCM to accept your key.

 

Hey I’m Having that same problem I’m not too sure about the code but don’t Over look the steering lock module they tend to go bad and trip the yellow key light my mechanic jumped the steering lock relay to test it and it turns out that was my problem. If you do jump the relay just know it’s not a permanent fix

 

I like to call it a "semi-permanent" fix. Like the older guy yesterday with a 90's Maxima that wouldn't start at the grocery store, quick troubleshoot it was the neutral safety relay so I removed the relay and jumped the proper pins with a piece of 12AWG solid copper wire.

He had no money for repairs let alone paying to troubleshoot the issue, now the car starts (in any gear...) and runs fine, semi-permanent fix!

 

I called a locksmith he re program the key the key could still lock and unlock the car doors but when I put it in the slot and the door is open it just tells me to pull the key out but it was doing the same thing after he reprogrammed it and I did a Diagnostic it was a code coming from the ipdm box sayin something about a solenoid state switch

 

Exactly which code?

 

code b210a.

 

It's not uncommon for that code to show up when the battery is drained, have you put the battery on a charger to make sure it's fully charged?

Also, did these problems show up shortly after a car wash or a big rain? If the battery box/cowl drains clog up the IPDM can get submerged in water which can screw up all manner of things. If it is still throwing that code with the replacement IPDM then that's probably not the issue.

Basically how it works is the push button to start the car is connected directly to the IPDM, If the BCM detects the KEY FOB then it will close the primary starter relay, the IPDM then checks state of the steering lock mounted on the side of the steering column and if the two internal switches send back the correct signal THEN the IPDM initiates it's internal (not replaceable, it's soldered to the board inside the IPDM) secondary starter relay (which is powered by the BCM start relay that's the replaceable one). Then power goes to the starter.

If you don't have enough battery power sometimes it fails to retract the steering lock mechanism, therefor the IPDM had sent the signal but the two internal switches for the lock still say it's in the locked position.

Also, if there is too much pressure on the side of the tires because the wheel got turned after the car was off then the steering wheel is locked with a LOT of tension against it and it might be struggling to unlock. Try holding the steering wheel either HARD to the left or HARD to the right while initiating the start button, or jack up the front of the vehicle to get the wheels off the ground which would also take tension off the steering lock.

 

no sir it wasn’t raining or anything I was trying to get my ac fixed while he was working on the vehicle the battery went dead and my key battery was already low then that’s when I tried to cut it back on it wouldn’t do anything now the yellow light isn’t coming on only the red blinking light comes on. I replaced the battery still nothing I switched out the ipdm box nothing happens.