light bulb warning incorrect

clemsonkev · 08-16-2015, 03:11 PM

Interior warning light on dash but I can't find any exterior lights out.

What's up with this?

stewey · 08-16-2015, 03:56 PM

Is your 335 an early production year? My 2006 was throwing bulb errors for working bulbs so I had to code out the warnings. First step is to check which bulb(s) it is complaining about. You can use INPA for this if you are setup for it.

clemsonkev · 08-16-2015, 04:32 PM

2007 MY that I bought new 8 yrs ago.

Don't have INPA, but maybe my Cobb device can tell me what is tripping the warning?

Possible that a bulb is on the way out? Does it know that?

stewey · 08-17-2015, 11:58 AM

I don't know anything about the Cobb sorry. NA life! I think it works by measuring resistance. Too much or too little and it throws errors. I suppose a failing bulb could cause that. However, my hunch is that there is a problem with the early FRM modules that cause phantom bulb failure warnings.

ThatRWD · 08-17-2015, 12:03 PM

My 07 335i does the same thing.

nekbreaker · 08-17-2015, 01:02 PM

I had the same problem I replaced the bulb carrier on the taillights problem solved

08-16-2015, 03:11 PM	#1
clemsonkev OOOO another former Audi B5 S4 owner OOOO 196 Rep 625 Posts Drives: 997 Carrera S (sold the M2) Join Date: Sep 2007 Location: Summerville SC iTrader: (0)	light bulb warning incorrect Interior warning light on dash but I can't find any exterior lights out. What's up with this?
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08-16-2015, 03:56 PM	#2
stewey Second Lieutenant 71 Rep 246 Posts Drives: 2006 325i 6MT Join Date: Apr 2015 Location: Victoria, BC iTrader: (0)	Is your 335 an early production year? My 2006 was throwing bulb errors for working bulbs so I had to code out the warnings. First step is to check which bulb(s) it is complaining about. You can use INPA for this if you are setup for it.
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08-16-2015, 04:32 PM	#3
clemsonkev OOOO another former Audi B5 S4 owner OOOO 196 Rep 625 Posts Drives: 997 Carrera S (sold the M2) Join Date: Sep 2007 Location: Summerville SC iTrader: (0)	2007 MY that I bought new 8 yrs ago. Don't have INPA, but maybe my Cobb device can tell me what is tripping the warning? Possible that a bulb is on the way out? Does it know that?
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08-17-2015, 11:58 AM	#4
stewey Second Lieutenant 71 Rep 246 Posts Drives: 2006 325i 6MT Join Date: Apr 2015 Location: Victoria, BC iTrader: (0)	I don't know anything about the Cobb sorry. NA life! I think it works by measuring resistance. Too much or too little and it throws errors. I suppose a failing bulb could cause that. However, my hunch is that there is a problem with the early FRM modules that cause phantom bulb failure warnings.
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08-17-2015, 12:03 PM	#5
ThatRWD Major 109 Rep 1,062 Posts Drives: 335i Join Date: Mar 2014 Location: Northern VA iTrader: (0)	My 07 335i does the same thing.
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08-17-2015, 01:02 PM	#6
nekbreaker Captain 170 Rep 618 Posts Drives: bmw e92 m3 Join Date: Mar 2011 Location: massachussett iTrader: (1)	I had the same problem I replaced the bulb carrier on the taillights problem solved
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