What is the issue if your car cannot be read at BMW on their computer/diag machine? - BMW 3-Series (E90 E92) Forum

madmanhiker · 05-07-2012, 05:47 PM

What is the issue if your car cannot be read at BMW on their computer/diag machine?

I have to ask...............because this happened to me - twice.

I have friends at the dealership, I'm with them during work, personal friends of mine. The diag computer hooked up to my OBD2 port........ runs for about 8 mins then bombs out - saying it couldn't read the ECU to perform diags.... discuss.

Juiced46 · 05-07-2012, 06:00 PM

You wouldnt happen to have a Procede or JB on the car would you?

With the Procede you need to disconnect the CAN wires from the Procede to factory connection or the machine will not detect the car or VIN. Earlier JBs you do not need to do anything, not sure if the JB4 taps into CAN wires. If it does, remove the CAN wires. You can leave the rest of the stuff connected however.

madmanhiker · 05-07-2012, 06:05 PM

YES - I have JB4 Stage 2. My dealership is "safe".... I set it to MAP 0... figured that would be ok.... hmmmmmmmm........

Juiced46 · 05-07-2012, 06:08 PM

Does the JB4 connect to the CAN wires? I would assume it does since it has a CAN clear feature built into it. You NEED to disconnect those CAN wires. Setting it to Map 0 will not be enough. Atleast not for the Procede, I know this for a FACT. As soon as the CAN wires are disconnected the ISID can read and program the car as it normally would.

mashimarho · 05-07-2012, 06:14 PM

Interesting....

Juiced46 · 05-07-2012, 06:15 PM

Ok, I just read the JB4 install instructions. It does hook to the CAN wiring in the E-Box on the passenger side. With that being said you MUST remove those CAN wires. So, set your tune to MAP 0, remove the 2 CAN wires and hook up to the BMW system. This will work for sure I guarantee it.

SpartanGA · 05-07-2012, 06:21 PM

the CAN wires are the 2 red/blue wires in the e-box? where you had to unwrap the cloth tape? So the JB or Procede will function in map 0 and act normal with these wires disconnected?

onebadmofo · 05-07-2012, 06:22 PM

JB4 interferes with coding. I usually can live with it if it's on map0 but in two extreme cases it had to be taken off.

Edit: now that I remember both times it was on N55. One Procede and one JB4.
No issues that I can recall on N54.

madmanhiker · 05-07-2012, 06:23 PM

Quote:

Originally Posted by Juiced46

Does the JB4 connect to the CAN wires? I would assume it does since it has a CAN clear feature built into it. You NEED to disconnect those CAN wires. Setting it to Map 0 will not be enough. Atleast not for the Procede, I know this for a FACT. As soon as the CAN wires are disconnected the ISID can read and program the car as it normally would.

I sent this question to Terry..... you raise a good point - but I believe when set to MAP 0 there is a pass through. The BMW techs were just running a diag - NO SOFTWARE was being loaded.....

madmanhiker · 05-07-2012, 06:25 PM

Quote:

Originally Posted by SpartanGA

the CAN wires are the 2 red/blue wires in the e-box? where you had to unwrap the cloth tape? So the JB or Procede will function in map 0 and act normal with these wires disconnected?

that's GOT to be it then....

madmanhiker · 05-07-2012, 06:25 PM

Quote:

Originally Posted by onebadmofo

JB4 interferes with coding. I usually can live with it if it's on map0 but in two extreme cases it had to be taken off.

Edit: now that I remember both times it was on N55. One Procede and one JB4.
No issues that I can recall on N54.

cool - thx

Juiced46 · 05-07-2012, 06:26 PM

Quote:

Originally Posted by madmanhiker

I sent this question to Terry..... you raise a good point - but I believe when set to MAP 0 there is a pass through. The BMW techs were just running a diag - NO SOFTWARE was being loaded.....

See my above post. It does indeed connect to the CAN wires. I understand they are not loading software. For them to scan your car, meaning hooking up to the BMW machine for just diag or whatever, you need to remove those CAN wires from the JB4, even in pass thru mode. If you do not do this, the system will not identify your car, nor see your VIN. They can manually try to hook up by entering the VIN but it will crap out on you and not scan. Trust me. Disconnect the CAN wires and it will work for sure.

madmanhiker · 05-07-2012, 06:26 PM

Quote:

Originally Posted by Juiced46

Ok, I just read the JB4 install instructions. It does hook to the CAN wiring in the E-Box on the passenger side. With that being said you MUST remove those CAN wires. So, set your tune to MAP 0, remove the 2 CAN wires and hook up to the BMW system. This will work for sure I guarantee it.

thanks!

madmanhiker · 05-07-2012, 06:27 PM

Quote:

Originally Posted by Juiced46

If you do not do this, the system will not identify your car, nor see your VIN. They can manually try to hook up by entering the VIN but it will crap out on you and not scan.

^^^^^^ this is exactly what happened ^^^^

I f*ckin love this forum.

thanks to all!

Mike@N54Tuning.com · 05-07-2012, 06:59 PM

The JB4 turns off the CAN system on map 0 so you should not need to physically disconnect the CAN wires with it. BMWs systems crap out all the time when connecting to cars, perhaps its just something on their end. Maybe have them try to connect/update and if it fails remove CAN wires on the spot to see if that helps.

Mike

steelersfan · 05-07-2012, 07:14 PM

It is a a great place to gain much needed education and wisdom, of course properly filtered. Following with great interest, since I just installed JB4 Stage 2 this weekend on my N55. I too, based on previous posts was under the impression that changing to Map 0 would allow BMW diagnosis, if required with no problem. "madmanhiker, please report back your findings. If it turns out that N55'ers have to go through the trouble to disconnect the CAN wires, might as well remove the entire JB4. I mean why take the chance, safe dealership or not? BTW: Not my intention to jack your thread

madmanhiker · 05-07-2012, 07:18 PM

Quote:

Originally Posted by Mike@N54Tuning.com

The JB4 turns off the CAN system on map 0 so you should not need to physically disconnect the CAN wires with it. BMWs systems crap out all the time when connecting to cars, perhaps its just something on their end. Maybe have them try to connect/update and if it fails remove CAN wires on the spot to see if that helps.

Mike

Mike - I appreciate you chiming in, but I have to tell you, on 2 separate days, where that same computer read other BMW's in between - MY car was not able to be read - it didn't recognize my VIN nor was it able to perform diags. It is what it is, this really happened. I'll be back there to get more work done soon enough, but I had really thought that there was a real issue - but my car is fine (other than the typical emission codes due to the cats being removed).

05-07-2012, 05:47 PM	#1
madmanhiker Major Drives: '11 E92 335i Join Date: Jul 2008 Location: Jacksonville, Fl Posts: 1,383 iTrader: (2) Garage List 2011 335i M-Sport [3.00] 2008 328i Sport Pre ... [0.00]	What is the issue if your car cannot be read at BMW on their computer/diag machine? What is the issue if your car cannot be read at BMW on their computer/diag machine? I have to ask...............because this happened to me - twice. I have friends at the dealership, I'm with them during work, personal friends of mine. The diag computer hooked up to my OBD2 port........ runs for about 8 mins then bombs out - saying it couldn't read the ECU to perform diags.... discuss. __________________ -madmanhiker jax,fl
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05-07-2012, 06:00 PM	#2
Juiced46 Captain Drives: 03 Turbo Cobra, 2011 335xi Join Date: Jun 2010 Location: Wallingford CT Posts: 972 iTrader: (3)	You wouldnt happen to have a Procede or JB on the car would you? With the Procede you need to disconnect the CAN wires from the Procede to factory connection or the machine will not detect the car or VIN. Earlier JBs you do not need to do anything, not sure if the JB4 taps into CAN wires. If it does, remove the CAN wires. You can leave the rest of the stuff connected however. __________________ 2013 Alpine White F10 535i. JB4 S2, Quad Tip Magnaflow Exhaust, H&R Springs 2011 335ix Le Mans Blue w/ M Sport SOLD 2003 Turbo Cobra 765rwhp/650rwtq 9.77@126 pump gas, lifting @ the 1000ft mark

05-07-2012, 06:05 PM	#3
madmanhiker Major Drives: '11 E92 335i Join Date: Jul 2008 Location: Jacksonville, Fl Posts: 1,383 iTrader: (2) Garage List 2011 335i M-Sport [3.00] 2008 328i Sport Pre ... [0.00]	YES - I have JB4 Stage 2. My dealership is "safe".... I set it to MAP 0... figured that would be ok.... hmmmmmmmm........ __________________ -madmanhiker jax,fl

05-07-2012, 06:08 PM	#4
Juiced46 Captain Drives: 03 Turbo Cobra, 2011 335xi Join Date: Jun 2010 Location: Wallingford CT Posts: 972 iTrader: (3)	Does the JB4 connect to the CAN wires? I would assume it does since it has a CAN clear feature built into it. You NEED to disconnect those CAN wires. Setting it to Map 0 will not be enough. Atleast not for the Procede, I know this for a FACT. As soon as the CAN wires are disconnected the ISID can read and program the car as it normally would. __________________ 2013 Alpine White F10 535i. JB4 S2, Quad Tip Magnaflow Exhaust, H&R Springs 2011 335ix Le Mans Blue w/ M Sport SOLD 2003 Turbo Cobra 765rwhp/650rwtq 9.77@126 pump gas, lifting @ the 1000ft mark

05-07-2012, 06:14 PM	#5
mashimarho Boss Drives: e92 LCI 335i xDrive™ Join Date: Mar 2010 Location: Grand Rapids, michigan Posts: 5,717 iTrader: (27) Garage List 2012 BMW 335i xDrive [5.00]	Interesting.... __________________ -Sean. 360 FORGED///DynamikiLLu51ions///ER///BMS///KW///VRSF///ARKYM///DD///CYBA///STOPTECH///BMW Performance /// My Progress: http://www.e90post.com/forums/showthread.php?t=770326

05-07-2012, 06:15 PM	#6
Juiced46 Captain Drives: 03 Turbo Cobra, 2011 335xi Join Date: Jun 2010 Location: Wallingford CT Posts: 972 iTrader: (3)	Ok, I just read the JB4 install instructions. It does hook to the CAN wiring in the E-Box on the passenger side. With that being said you MUST remove those CAN wires. So, set your tune to MAP 0, remove the 2 CAN wires and hook up to the BMW system. This will work for sure I guarantee it. __________________ 2013 Alpine White F10 535i. JB4 S2, Quad Tip Magnaflow Exhaust, H&R Springs 2011 335ix Le Mans Blue w/ M Sport SOLD 2003 Turbo Cobra 765rwhp/650rwtq 9.77@126 pump gas, lifting @ the 1000ft mark

05-07-2012, 06:21 PM	#7
SpartanGA First Lieutenant Drives: 2011 e93 335i m-sport, silver Join Date: Feb 2007 Location: Atlanta, GA Posts: 348 iTrader: (0)	the CAN wires are the 2 red/blue wires in the e-box? where you had to unwrap the cloth tape? So the JB or Procede will function in map 0 and act normal with these wires disconnected?

05-07-2012, 06:22 PM	#8
onebadmofo BimmerPost Supporting Vendor Drives: 2007 E92 335i Join Date: Aug 2010 Location: Staten Island, NY Posts: 2,342 iTrader: (14)	JB4 interferes with coding. I usually can live with it if it's on map0 but in two extreme cases it had to be taken off. Edit: now that I remember both times it was on N55. One Procede and one JB4. No issues that I can recall on N54. __________________ The OG of coding/programming in the tri-state area. More info here.

05-07-2012, 06:59 PM	#15
Mike@N54Tuning.com BimmerPost Supporting Vendor Drives: 07335i Join Date: Dec 2008 Location: Earth Posts: 12,237 iTrader: (78)	The JB4 turns off the CAN system on map 0 so you should not need to physically disconnect the CAN wires with it. BMWs systems crap out all the time when connecting to cars, perhaps its just something on their end. Maybe have them try to connect/update and if it fails remove CAN wires on the spot to see if that helps. Mike __________________ Lowest Price GUARANTEED on ALL PRODUCTS!! JB4 G5 On Sale - FREE Shipping Click Me - NEW JB4(N55) & DCI's $95.00 NEW F30-328 N20 Tune(Stage1) BMS Oil Catch Can (On Sale)

05-07-2012, 07:14 PM	#16
steelersfan First Lieutenant Drives: 11 335i E90 M-Sport Join Date: Nov 2011 Location: Virginia Beach, VA Posts: 328 iTrader: (1) Garage List 2011 BMW 335i [0.00]	It is a a great place to gain much needed education and wisdom, of course properly filtered. Following with great interest, since I just installed JB4 Stage 2 this weekend on my N55. I too, based on previous posts was under the impression that changing to Map 0 would allow BMW diagnosis, if required with no problem. "madmanhiker, please report back your findings. If it turns out that N55'ers have to go through the trouble to disconnect the CAN wires, might as well remove the entire JB4. I mean why take the chance, safe dealership or not? BTW: Not my intention to jack your thread __________________ 2011 335i Sedan \| Le Mans Blue \| ///M Sport \| Performance Edition \| WeissLicht AE's \| AG 19" M355's \|

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