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E60 / E61 (2004 - 2010)
BMW 5-Series E60 Sedan was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E61 wagon followed shortly there after. The E60/E61 5 series is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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  #1  
Old 08-11-2016, 09:12 AM
Wilkinson Wilkinson is offline
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Location: UAE
 
Join Date: Aug 2016
Posts: 3
Mein Auto: Alpina B5s
Alpina B5 - Downshift button doesn't work

Hi Guy's,

I'm lucky to own an Alpina B5s 2008 here in the UAE, I love the car, however due to a change in circumstances, I'm looking to sell it. Whilst having it detailed and serviced in preparation for its sale, I noticed the downshift button has stopped working. The up-shift button works fine.

Any ideas what could be wrong and whether this will be a costly fix? It's a waste of time me asking the local BMW dealer as there were only ever 6 of these imported into the Middle East and so local knowledge / experience of Alpina's is scarce.

All comments / suggestion gratefully received.

Thanks in advance

Mark
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  #2  
Old 08-11-2016, 12:29 PM
tim330i's Avatar
tim330i tim330i is offline
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Location: SF
 
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Posts: 12,586
Mein Auto: Ti Silver 03 M3
Welcome to Bimmerfest! I've moved your question to our E60 5 Series forum, you'll get more help in here.

Tim
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  #3  
Old 08-11-2016, 04:29 PM
ABCarr ABCarr is offline
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Location: Richmond Hill, ON
 
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Mein Auto: 2009 550i
I'm afraid I can't assist with your issue, but I do have a question about the B5s, specifically the ZF transmission software. I wonder if you have possibly driven a similar vintage 550i as a means of comparison....I am curious how different the Alpina reprogramming of the TCU makes the 6HP26 transmission perform. I believe that it is possible to flash the TCU in a 550i with the Alpina code, and if the benefits are significant with little or no downside, I would like to look into the re-flash for my 550i.

Thanks.
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  #4  
Old 08-12-2016, 04:09 AM
Kurt_ Kurt_ is offline
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Location: Ontario
 
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Mein Auto: 2007 530xi
By downshift button are you referring to paddle shifters or the one in the shifter? The shifter's wires supposedly fray and break over repeated use and can mess with the shifter's function.

Paddle shift, no idea.
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  #5  
Old 08-15-2016, 09:55 AM
Wilkinson Wilkinson is offline
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Location: UAE
 
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Mein Auto: Alpina B5s
Hi, Unfortunately I've not driven a 550i to compare it to my Alpina B5s so I'm afraid I can't offer you any comparison. Being honest I tend to leave the Alpina in auto mode until I need to put a lesser car in its place. The box behaves very different in sport mode and hangs on to the up-changes for longer.

Prior to my decision to sell the car I was contemplating purchasing a pedal box from DTE tuners (Germany) as they advertise a 35% power delivery enhancement earlier in the rev range than the standard Alpina engine software delivers. I was assuming the gearbox could handle this change as the engine doesn't deliver any more power, it's just the manner it comes across is different. Perhaps this may be a way to go, it wasn't a costly add one (approx $200 dollars).



Quote:
Originally Posted by ABCarr View Post
I'm afraid I can't assist with your issue, but I do have a question about the B5s, specifically the ZF transmission software. I wonder if you have possibly driven a similar vintage 550i as a means of comparison....I am curious how different the Alpina reprogramming of the TCU makes the 6HP26 transmission perform. I believe that it is possible to flash the TCU in a 550i with the Alpina code, and if the benefits are significant with little or no downside, I would like to look into the re-flash for my 550i.

Thanks.
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  #6  
Old 08-15-2016, 10:04 AM
Wilkinson Wilkinson is offline
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Location: UAE
 
Join Date: Aug 2016
Posts: 3
Mein Auto: Alpina B5s
Downshift button

Sorry I was referring to the -ve button (downshift) on the steering wheel, it is this that doesn't work. the +ve button (upshift) works fine.

There is a slight difference in the feel between the two buttons, but being honest a thumb isn't the most sensitive digit to use as a diagnostic tool....

The gearbox works perfectly when using the gearbox shifter in both sport and normal mode.

Quote:
Originally Posted by Kurt_ View Post
By downshift button are you referring to paddle shifters or the one in the shifter? The shifter's wires supposedly fray and break over repeated use and can mess with the shifter's function.

Paddle shift, no idea.
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