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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 12-08-2014, 11:31 PM
PumpinIron PumpinIron is offline
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Mein Auto: 1997 BMW M3
2000 M5 - OBDII Port Not Working

So I am using a Launch cReader VI+ OBDII scanner. I use it on all of my other vehicles and it works fantastic. However, when I attempt to use it on my 2000 BMW M5 it won't work.

I plug it into the OBDII port under the dash, then turn the ignition to key position II. The scanner turns on and attemps to access to car but eventually it times out and tells me it can't connect and to make sure the ignition is on and that the car is OBDII.

I've checked all fuses and none of them are blown. The cover is screwed onto the 20 pin PacMan port under the hood as well.

I can't figure it out, this is driving me nuts!
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Last edited by PumpinIron; 12-08-2014 at 11:59 PM.
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  #2  
Old 12-08-2014, 11:52 PM
zaleonardz zaleonardz is offline
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Hi Bud,

Couple of issues here, most likely is a incompatability with the scanner, I am not sure how to test that, other then perhaps trying somebody with a differant scanner to see if it works.

WHat you can do however, if you have access to an oscilloscope, check if you have a square wave coming out of it (on the 16 pin OBD, it is pin 7 which is your primary diagnostics bus k-line) and if memory serves it goes straight to the DME and branches out from there.

On the E39 it should be a single diagnostics wire that holds the DME, cluster, ABS, EGS, you should be able to check your wiring diagrams here http://www.bmw-planet.com/diagrams/release/en/
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  #3  
Old 12-08-2014, 11:58 PM
PumpinIron PumpinIron is offline
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Mein Auto: 1997 BMW M3
Quote:
Originally Posted by zaleonardz View Post
Hi Bud,

Couple of issues here, most likely is a incompatability with the scanner, I am not sure how to test that, other then perhaps trying somebody with a differant scanner to see if it works.

WHat you can do however, if you have access to an oscilloscope, check if you have a square wave coming out of it (on the 16 pin OBD, it is pin 7 which is your primary diagnostics bus k-line) and if memory serves it goes straight to the DME and branches out from there.

On the E39 it should be a single diagnostics wire that holds the DME, cluster, ABS, EGS, you should be able to check your wiring diagrams here http://www.bmw-planet.com/diagrams/release/en/
No access to an oscilloscope unfortunately.

However, when I purchased the car from the previous owner he plugged in his OBDII scanner to the port just to show me there were no codes in the system. His scanner seemed to work just fine but mine doesn't.

That seems odd though. Wouldn't an OBDII scanner work on any other OBDII car? This same OBDII scanner worked just fine on my old 1997 BMW M3.
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  #4  
Old 12-09-2014, 12:03 AM
edjack edjack is online now
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I would guess the same. Take the car to an auto parts store to verify that the OBD port is working.

So, the scan tool works on your M3?
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Last edited by edjack; 12-09-2014 at 12:04 AM.
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  #5  
Old 12-09-2014, 12:18 AM
PumpinIron PumpinIron is offline
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Yep, the same scanner works on my E36 M3 and on numerous other vehicles.

I'll have to stop by autozone tomorrow to see if their scanner works.
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