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View Full Version : How many OBD ports on the B5?



tymatk
12-30-2014, 04:29 PM
Hi all

How many OBD ports on the A4 B5? Beside from the one that sit next to the Ash Tray in the middle console, is there one anywhere else?

Thanks

LA4
12-30-2014, 10:06 PM
Do you mean the cig. lighter receptacle?

Because the OBD port isn't by the ash tray.

Articus
12-30-2014, 10:17 PM
Prefacelift (pre 1999.5) is in the middle console. Facelift is under the dash on drivers side. Only 1 per car. You will see a cutout shaped like OBDII in facelift cars in middle console but no port.

tymatk
12-30-2014, 10:25 PM
Thanks
I was hoping that there is one more somewhere.

I'm installing an intelligent reversing line module and it reads off the obd port. Mine is a 2000 model and it sits just behind the arm rest, next to the ash tray. It's a euro model by the way.

Articus
12-30-2014, 10:33 PM
What does an intelligent reversing line module do?
Maybe you can tap all the lines to the OBD2. Or have you considered a splitter for the port? As long as you are only reading from the port I don't think it should cause any issues with the ports functionality for diagnostics.

See this for what I mean:
http://www.ebay.com/itm/16-Pin-OBD2-OBDII-Splitter-Extension-Cable-Male-to-Dual-Female-Y-Cable/261640768080?_trksid=p2054897.c100204.m3164&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%2 6asc%3D20140407115239%26meid%3Dde671d2f323a400894c 3e4787c787403%26pid%3D100204%26prg%3D2014040711523 9%26rk%3D12%26rkt%3D30%26sd%3D400722708706

And since you're lucky enough to have your port in the middle console as opposed to next to the drivers legs, you can probably hide the extra wiring or hide the original port in that console area and push 1 end of the splitter in it's place. Then use the other splitter end for the reverse line.

walky_talky20
12-31-2014, 05:22 AM
I'm going to take a stab here and guess that the "intelligent reversing line module" the OP is talking about is an aftermarket "intelligent Parking Assist" system. It has a backup camera with on-screen video feed. The "intelligent" bit is that uses steering angle sensor data from the Traction Control computer (captured via OBD2) to generate a real-time on-screen "parking trajectory". One might be inclined to call this a "reversing line" feature, but I think "parking trajectory" has a much better ring to it.

Like such as:
http://car-solutions.com/content_image/product/824124/Intelligent_parking_assist_system_working_example. jpg

So, let's hope that the OP has a 2001 model year A4, and that his car is equipped with the optional (and somewhat rare) Electronic Stability Program so that all of this magic will actually work.

BaseDrifter
12-31-2014, 11:41 AM
Prefacelift (pre 1999.5) is in the middle console. Facelift is under the dash on drivers side. Only 1 per car. You will see a cutout shaped like OBDII in facelift cars in middle console but no port.

Not quite. I believe it was only 96s that had the OBD port at the rear of the center console. My 97 definitely has it under the dash, as does my other 99, (and every other 97+ prefacelift I've worked on.)

tymatk
01-01-2015, 02:37 PM
What does an intelligent reversing line module do?
Maybe you can tap all the lines to the OBD2. Or have you considered a splitter for the port? As long as you are only reading from the port I don't think it should cause any issues with the ports functionality for diagnostics.

See this for what I mean:
http://www.ebay.com/itm/16-Pin-OBD2-OBDII-Splitter-Extension-Cable-Male-to-Dual-Female-Y-Cable/261640768080?_trksid=p2054897.c100204.m3164&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%2 6asc%3D20140407115239%26meid%3Dde671d2f323a400894c 3e4787c787403%26pid%3D100204%26prg%3D2014040711523 9%26rk%3D12%26rkt%3D30%26sd%3D400722708706

And since you're lucky enough to have your port in the middle console as opposed to next to the drivers legs, you can probably hide the extra wiring or hide the original port in that console area and push 1 end of the splitter in it's place. Then use the other splitter end for the reverse line.

Interesting, thank you, never knew such existed.

tymatk
01-01-2015, 02:40 PM
I'm going to take a stab here and guess that the "intelligent reversing line module" the OP is talking about is an aftermarket "intelligent Parking Assist" system. It has a backup camera with on-screen video feed. The "intelligent" bit is that uses steering angle sensor data from the Traction Control computer (captured via OBD2) to generate a real-time on-screen "parking trajectory". One might be inclined to call this a "reversing line" feature, but I think "parking trajectory" has a much better ring to it.

Like such as:
http://car-solutions.com/content_image/product/824124/Intelligent_parking_assist_system_working_example. jpg

So, let's hope that the OP has a 2001 model year A4, and that his car is equipped with the optional (and somewhat rare) Electronic Stability Program so that all of this magic will actually work.

Exactly right!

I have access to an aftermarket module, at this stage, i only hope that it will works with steering wheel angle sensor and not ESP as i don't think my car has ESP equipped.

tymatk
01-01-2015, 02:40 PM
Not quite. I believe it was only 96s that had the OBD port at the rear of the center console. My 97 definitely has it under the dash, as does my other 99, (and every other 97+ prefacelift I've worked on.)

Mine is Euro model i believed, it's right hand drive and i'm from the land of down under, Australia.

BaseDrifter
01-01-2015, 03:21 PM
Ah yes, I was referring to north american cars, non-NA cars may have had the OBD port in the center console later than 96.