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  #31  
Old 12-23-2011, 03:58 PM
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Super-helpful thread and pictures. Made getting the rear bumper cover off easy. Thanks!
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  #32  
Old 03-25-2012, 06:22 PM
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Installed the hitch on my 2010 E70 today...the threads here were very helpful.

Here are my observations...

The harness had 3 connectors that I could not find a home for...

1 - prewired brake controller - will be used once I connect my Tekonsha brake controller

2 – comfort access antenna base (near the hitch) – car does not have this option

3 – comfort access antenna (2pin connector, in the fuse area) – car does not have this option

The USB bus was overlooked on my part initially, but found the 3pin connector in the loom just under the tail light…

Overall, it took me 4.5 hours to complete…

HOWEVER, I am getting a restraint system warning on my NAV informing me that either the (airbag, belts or belt tensioner) is not operational. Not sure what this could be…

Will be talking the car to the dealer for troubleshooting and will the car reprogrammed for the trailer hitch…

NEXT, figure out how to connect the Tekonsha Prodigy P2 (carried over from my E53). It has four wires…one will go to the trailer harness brake controller connector (option noted above). However, the harness has four wires so I need to figure out which wire to connect to the brake controller…


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  #33  
Old 03-27-2012, 11:05 AM
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Dropped the car off at the dealer today to get the SW integration level upgraded for the hitch.

The car is a 2/2010 build but has even older SW. The dealer showed me that it will take up to 6 hours to complete - this was based on the estimated time that the computer showed. I was shocked to see this...

They quoted me 2 hours labor time for the update...

Anyhow, I was offered a loaner so that I could head to work. Will know more details later this afternoon...
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  #34  
Old 03-27-2012, 04:03 PM
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Electronics or DME crashed while uploading the latest BMW integration level SW. OUCH!!!!

The dealer has ordered some new parts to address and reload. Heading to the dealer now to get long-term loaner...more details shortly.

Anyone else experiance a similar issue?
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  #35  
Old 03-27-2012, 04:54 PM
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Yes, do a search, it isn't unknown.

Apart from the trailer wiring problem, which forces the issue, some want the latest software just because it is the latest, and others want to avoid the risk of changing something that is working just fine, in the search for something better. It shouldn't crash, but it has happened. Also, the time quoted is not unreasonable.
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  #36  
Old 03-27-2012, 05:16 PM
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They crashed my 2010 during the update as well. They had to replace a computer, took 3 days to get it
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  #37  
Old 03-27-2012, 08:05 PM
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They had to keep mine over the weekend, when installing an iPod module. Said it was a programming issue and it took longer than expected. I was surprised, but maybe it is more common.
I wonder if it is inexperienced techs or just how it is.
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  #38  
Old 03-27-2012, 08:27 PM
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That only happens when they flash all modules in the car with the latest daten files. It does give you added functionality. My voice recognition worked way better after.

If you just want to enable the tow bar, a coder can easily modify the FA vehicle order to add the retrofit code for the tow bar.
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  #39  
Old 03-27-2012, 08:47 PM
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Stopped by the dealer, they contacted BMW NA and got some feedback. Were applying the update for the 3rd time this afternoon with guidance from BMW NA. It was around 70% at that time and was further ahead than the previous attempts. Crossing my fingers, but will know more tomorrow.
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  #40  
Old 03-28-2012, 08:47 PM
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All squared away. Got the car back today. Latest SW installed...
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