OBD2 port and smog

BMW-SRT · 05-02-2017, 03:35 PM

The acura dealership I bought my 2013 X5M from forgot to smog check the car before they sold it to me 2 months ago, its a 2hr drive to the dealer so they offered to reimburse me if I get it smogged locally. Ive gone to two different smog places (they use the same model machine) and their machine cant communicate with the OBD2 port but if they connect a hand held diagnostic to the OBD2 port it communicated just fine, anyone else ever had this issue?

what have i got into · 05-03-2017, 10:15 PM

I am not sure this is the same thing or not.

Recently my neighbor went to smog and they said they couldn't read the VIN through the OBD2. Apparently the machine (not the handheld) was also trying to match up the VIN to the DMV database through the OBD2. Somehow the ECU wasn't communicating the VIN. So the smog people said they had to go back to the dealer and have a new ECU installed. And my neighbor promptly said screw that. The neighbor just went back another day to a different person and said please manually read my VIN and the new person was able to type it in the computer.

So not sure if that's what you have going on or not. I saw on some of the forums this issue popping up here and there.

JoeyBimX5din · 05-04-2017, 11:13 AM

Isn't the fix to take the ride back to the Acura dealer? They may have 'forgotten' to do the smog because they had the same issue trying to hookup that emissions had.

I have a 2011 X5 50i (and that may not help you) and my Maryland station communicated with mine just fine.

BMW-SRT · 05-04-2017, 04:05 PM

Yeah Im taking it back Saturday morning, in California its not even legal for a car dealership to sell a car without a smog check. Who knows what happened on their end. I did some research and a few people have had the same issue with their BMW's, usually when they have had some type of flash done to the car, one guy had a transmission flash done and had to flash the car back to stock for the OBD2 port to communicate with a smog machine.

I looked at their website the other day and noticed they have a 2013 M5 with 30K miles. I might test drive it and see if I like it enough to ask about a "trade-in"...

05-02-2017, 03:35 PM	#1
BMW-SRT First Lieutenant 171 Rep 347 Posts Drives: C63sAMG, GLC63sAMG, x5m, 335i Join Date: Jan 2011 Location: Cen-Cal iTrader: (0)	OBD2 port and smog The acura dealership I bought my 2013 X5M from forgot to smog check the car before they sold it to me 2 months ago, its a 2hr drive to the dealer so they offered to reimburse me if I get it smogged locally. Ive gone to two different smog places (they use the same model machine) and their machine cant communicate with the OBD2 port but if they connect a hand held diagnostic to the OBD2 port it communicated just fine, anyone else ever had this issue? Last edited by BMW-SRT; 05-02-2017 at 04:08 PM..
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05-03-2017, 10:15 PM	#2
what have i got into Private 14 Rep 54 Posts Drives: 2012 135i, 2013 X5d Join Date: Mar 2015 Location: Portland OR iTrader: (1)	I am not sure this is the same thing or not. Recently my neighbor went to smog and they said they couldn't read the VIN through the OBD2. Apparently the machine (not the handheld) was also trying to match up the VIN to the DMV database through the OBD2. Somehow the ECU wasn't communicating the VIN. So the smog people said they had to go back to the dealer and have a new ECU installed. And my neighbor promptly said screw that. The neighbor just went back another day to a different person and said please manually read my VIN and the new person was able to type it in the computer. So not sure if that's what you have going on or not. I saw on some of the forums this issue popping up here and there.
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05-04-2017, 11:13 AM	#3
JoeyBimX5din Lieutenant 49 Rep 449 Posts Drives: 2011 BMX X5 Xdrive50i Join Date: Feb 2017 Location: Eldersburg MD iTrader: (0)	Isn't the fix to take the ride back to the Acura dealer? They may have 'forgotten' to do the smog because they had the same issue trying to hookup that emissions had. I have a 2011 X5 50i (and that may not help you) and my Maryland station communicated with mine just fine. __________________ 2011 BMX X5 Xdrive50i - 127K - No muffler, BMS Stage 1 2005 Jeep Grand Cherokee 5.7L V8-Her stock DD 1995 Ford Thunderbird 4.6 V8 LX - A bunch of mods BMW guys don't care about 1995 BMW 540i6 - H&R Lowering Springs, Bilstein's, Racing Dynamics Bars, Catback, Short shifter
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05-04-2017, 04:05 PM	#4
BMW-SRT First Lieutenant 171 Rep 347 Posts Drives: C63sAMG, GLC63sAMG, x5m, 335i Join Date: Jan 2011 Location: Cen-Cal iTrader: (0)	Yeah Im taking it back Saturday morning, in California its not even legal for a car dealership to sell a car without a smog check. Who knows what happened on their end. I did some research and a few people have had the same issue with their BMW's, usually when they have had some type of flash done to the car, one guy had a transmission flash done and had to flash the car back to stock for the OBD2 port to communicate with a smog machine. I looked at their website the other day and noticed they have a 2013 M5 with 30K miles. I might test drive it and see if I like it enough to ask about a "trade-in"...
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