Electrical Problems - Page 2

2011x5 · #1 11-08-2018, 02:35 AM

Ok so this is the first X5 I have bought its a few days old i shelled out $11k cash and already a bunch of problem and headaches (didn't buy the used car warranty

they offered).
Its a 2011 X5 35IX 3.0
Yesterday the check engine light went off and i read the code with a generic reader and it showed code P15FE no idea what it is. I cleared it took it for a spin about 10 miles all was good.
This morning I hop in start the car and the check engine and airbag were on and went away maybe 15 sec after car was started. I put it in reverse halfway down the driveway it kicks it back in neutral by itself, i head out though it was nothing 1 mile down the road every single light on the dash comes on tells me to pull over slowly. I pull over shut it off start it up again now everything is going crazy no speedometer, no gas needle, all dash lights are on the transmission light on, reduced power on you name it the dash had it on. So I made it home did a scan again same code P15FE. So i cleared the code again this time it came back on in about 1 mile and now all light are on again and the transmission is randomly kicking back in to neutral at any stops or red light i get to.
Any ideas where i should start looking. I did a sparkplug replace 2 days ago if that has anything to do with it. I used the factory set gap ones from bosch.

Update 1: more codes came up now P15FE, P1407, P1408, P110F, P0420 so im guessing whatever the cause is its tripping all these faults. Remote door lock unlock doesn't have the lights or beep sound.
Can a TPMS cause all this? A warning for low tire pressure was coming on everyday for the rear left tire(nail in it)?

Update 2: I had ordered the INPA cable so it got here today when i went to check out the car started it up only check engine light was on nothing else. Cleared the codes drove around for about good 45min perfect no lights nothing like nothing had happened. Id like to add that when this whole thing started happening there was light rain outside that day nothing major though.