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      03-26-2010, 11:47 AM   #1
HTRules
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HPFP curveball from BMW

OK, how's this for a big-time curveball from BMW? Yesterday I was told by my SA @ the local BMW dealership that as of two weeks ago (approx) the company now believes the entire HPFP problem is caused by faulty software, and there is a new fix/software upgrade that MUST be applied to the ECU before any hardware replacement can be done.

They said they've done two 335's so far and both are working (no long cranks, etc.) at this point.

The software upgrade literally takes all day and will, of course, overwrite my Dinan SII software, and the SA thinks that if I then go back to Dinan for an upgrade there, and my HPFP subsequently fails, BMW will blame the failure on Dinan's software any will probably refuse to warranty any repair.

I'm going to talk to Dinan next week and get their take on this, but at this point I feel caught in a hell of a bind.

Whaddya think?
Rick
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      03-26-2010, 11:53 AM   #2
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They've been claiming it for a while and peoples pumps are still failing.
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      03-26-2010, 12:09 PM   #3
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Old news? Why the hell did 943 part get released? They wouldn't go as far as going to a different manufacturer to make the new pumps.
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      03-26-2010, 12:10 PM   #4
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I got the software after I had some long cranks and it helped. No long cranks anymore...
My dealer told me that BMW Switzerland forbid them to change the fuelpump and they had to do the software change first.
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      03-26-2010, 12:36 PM   #5
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Only time will tell.
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      03-26-2010, 12:51 PM   #6
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I was told the same thing yesterday. Although they apparently encountered problems when they tried to reflash the ECU, so was told the job might take another day or so.
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      03-26-2010, 01:36 PM   #7
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I just had my pump replaced yesterday with 943 and my software updated as well.
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      03-26-2010, 01:36 PM   #8
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Ive been occasionally getting long cranks, I have a jb3 installed in my car, as well as a few other mods. Do i need to remove the jb3 when i go for the upgrade or is the software upgrade done through the obd port?
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      03-26-2010, 01:41 PM   #9
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Quote:
Originally Posted by marcel b View Post
I got the software after I had some long cranks and it helped. No long cranks anymore...
My dealer told me that BMW Switzerland forbid them to change the fuelpump and they had to do the software change first.
+1, my car has been behaving fine with the new software update. After sitting overnight and I unlock the doors the car makes a strange noise like its clearing out something
But I'm happy now that the long cranks are gone.
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      03-26-2010, 01:49 PM   #10
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It's a January service bulletin they sent out to everyone, my car got the update, the long crank times went away, but it still loses all power and starts shaking after hard acceleration. It's going back this week.

It's SI B12 55 06 and it specifically states that from now on replacing the HPFP requires authorization from BMW NA.
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      03-26-2010, 02:31 PM   #11
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I just went in to the dealership yesterday morning for HPFP issues. The SA first told me they would probably have to replace the HPFP. But late in the afternoon, he told me that they had just installed a software update and would have to keep it overnight to test it with a cold start and some diagnostics in the morning, and if everything passed then they wouldn't have to replace any mechanical parts. I was pretty upset about this because I wanted them to just replace the failing part.

This morning I got a call from the SA, and he said that they ran the diagnostics after the software update, and determined that they would have to go ahead and replace the HPFP, which I was glad to hear. He knew about the new part # when I spoke with him yesterday, so hopefully I'll be getting the 943.
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      03-26-2010, 02:43 PM   #12
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interesting
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      03-26-2010, 03:04 PM   #13
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Quote:
Originally Posted by Balzz View Post
I just had my pump replaced yesterday with 943 and my software updated as well.


hey Balzz... Just curious which dealership did you go to get 943 pump?
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      03-26-2010, 03:06 PM   #14
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In case anyone is wondering, if your dealership is still giving the non-943 fuel pump... someone's going to get in trouble.
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      03-26-2010, 03:10 PM   #15
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Quote:
Originally Posted by HTRules View Post
OK, how's this for a big-time curveball from BMW? Yesterday I was told by my SA @ the local BMW dealership that as of two weeks ago (approx) the company now believes the entire HPFP problem is caused by faulty software, and there is a new fix/software upgrade that MUST be applied to the ECU before any hardware replacement can be done.

They said they've done two 335's so far and both are working (no long cranks, etc.) at this point.

The software upgrade literally takes all day and will, of course, overwrite my Dinan SII software, and the SA thinks that if I then go back to Dinan for an upgrade there, and my HPFP subsequently fails, BMW will blame the failure on Dinan's software any will probably refuse to warranty any repair.

I'm going to talk to Dinan next week and get their take on this, but at this point I feel caught in a hell of a bind.

Whaddya think?
Rick
I think its your SA that is talking outa his ass, not BMW.
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      03-26-2010, 03:10 PM   #16
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It's not the software. My new update fixed my long cranks for like 5 days, now they are back. BMW just updated my software without the new pump, they are just looking for a cheap fix.
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      03-26-2010, 03:48 PM   #17
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hey Balzz... Just curious which dealership did you go to get 943 pump?
Durham.
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      03-26-2010, 04:25 PM   #18
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I beleive it is 37.0.0.1 to fix this. Time will tell as to the success, which is doubtful. I am wonderin if it is just with long cranks that this software helps with. Perhaps many pumps were being replaced when just long cranks occured which could have been handled with just software. In other words, there isn't one problem but multiple.
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      03-26-2010, 04:28 PM   #19
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Quote:
Originally Posted by scalbert View Post
I beleive it is 37.0.0.1 to fix this. Time will tell as to the success, which is doubtful. I am wonderin if it is just with long cranks that this software helps with. Perhaps many pumps were being replaced when just long cranks occured which could have been handled with just software. In other words, there isn't one problem but multiple.
I think you could be onto something there.

Thanks for all the input, guys.

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      03-26-2010, 05:02 PM   #20
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Quote:
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I am wonderin if it is just with long cranks that this software helps with. Perhaps many pumps were being replaced when just long cranks occured which could have been handled with just software. In other words, there isn't one problem but multiple.
Interesting theory - one I asked my SA about, and although he's obviously not in the engineering loop, he said the software update is to address the long cranks. He was told it had more to do with timing and coil issues rather than simply masking fault codes.

As part of the TSB they have to check-out the low pressure fuel pump but he mentioned he has never seen one fail.

In his experience, even with the software update and diagnostic tests, all of the cars had their HPFP replaced after all!
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      03-26-2010, 05:55 PM   #21
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Quote:
Originally Posted by HTRules View Post
OK, how's this for a big-time curveball from BMW? Yesterday I was told by my SA @ the local BMW dealership that as of two weeks ago (approx) the company now believes the entire HPFP problem is caused by faulty software, and there is a new fix/software upgrade that MUST be applied to the ECU before any hardware replacement can be done.

They said they've done two 335's so far and both are working (no long cranks, etc.) at this point.

The software upgrade literally takes all day and will, of course, overwrite my Dinan SII software, and the SA thinks that if I then go back to Dinan for an upgrade there, and my HPFP subsequently fails, BMW will blame the failure on Dinan's software any will probably refuse to warranty any repair.

I'm going to talk to Dinan next week and get their take on this, but at this point I feel caught in a hell of a bind.

Whaddya think?
Rick
Your SA needs to be called on his BS ........... and then educated as to what BMW NA is actually requiring and not what the dealer wants to require.

BMW NA has the 10/100K warranty in place indefinitely because of the failure. Dinan is a BMW approved enhancement ....... your dealer/SA is full of shit, period.
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      03-26-2010, 06:00 PM   #22
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In case anyone is wondering, if your dealership is still giving the non-943 fuel pump... someone's going to get in trouble.
if there is a 881 pump still in dealer stock -- believe me -- that dealer just lost $$$ cuz those where called back to the RPDCs -- no ifs, ands, or butts
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