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#1
10-02-2009, 10:00 PM
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Rough downshift (from 2nd to 1st)
It mainly occurs when the weather is cooler. When i'm coming to a stop, the downshift from 2nd to 1st is rough, rpms drop below 500 when this happens. The confusing thing is, this only occurs in normal mode. when i switch it to sports mode, this never happens. Anyone ever experience this? Tips? Thanks Franklin
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Franklin Joseph 11 X5d - 01 325 - 11 1M 
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#3
10-03-2009, 01:55 PM
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You can do a search on this forum as this issue has been debated to no resolve. I also own an 03 4.6iS and have performed everything from Dinan software to dealer diagnosis...the downshift issue was still present. I sold my Dinan S2 4.6iS and purchased a lower mileage 4.6iS and the issue was still present even after replacing trany and installing a new torque converter.
I know several people with 4.8iS' who also have this issue...i guess it's inherent to owning a BMW performance SUV and something we just have to learn to live with.
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#4
10-03-2009, 06:43 PM
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Try resetting the Transmission Adaptation, it did help on mine when the rough down shift was really bad.
__________________
 Here's the Photo Album of my (sold) X3; Album of my (newish) X5 is on the way! (WARNING: read this before you buy anything from Umnitza)
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#5
10-03-2009, 07:06 PM
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What's up Franklin...the rough downshift is normal by all accounts. Although I only experienced it when in sport mode. The RPM's dropping is something I didn't experience at all. Drop me a PM and I can shot you some contact info for my Tech......Phil
__________________
2011.5 Dinan ///M3: SSII DCT Competition Pkg Convenience Pkg Premium Pkg 2 Heated Seats Enhanced Premium Sound Black Kidney Grills BMW M Performance Steering Wheel BMW Carbon Fiber Performance Spoiler BMW Aluminum Pedals Dinan Exhaust Dinan Mid-Exhaust (x-pipe) Dinan Carbon Fiber Intake Dinan Performance Tune Dinan Pulley Kit Dinan CH-R Wheels Dinan Carbon Fiber Strut Tower Braces Arkym Front Lip Carbon Reflectors Lux H8 V3 Brembo 365mm BBK
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#6
10-04-2009, 02:00 PM
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Quote:
How do i do this? Thanks guys...good to know its pretty common for the X5...guess will patiently wait till the transmission dies. Phil...will send u a message soon. thanks franklin
__________________
Franklin Joseph 11 X5d - 01 325 - 11 1M
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#7
10-04-2009, 02:45 PM
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Quote:
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#8
10-04-2009, 03:20 PM
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Quote:
-Turn key to position 2. But dont start the engine. -Floor the gas pedal for 30-40 secs. -Release the gas pedal, step on brake and start the engine. -Drive FORWARD ====
__________________
Here's the Photo Album of my (sold) X3; Album of my (newish) X5 is on the way! (WARNING: read this before you buy anything from Umnitza)
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#9
10-04-2009, 04:41 PM
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There has been some reports that getting a sw upgrade for trans did help on this issue. Although I'm not sure if it was the upgrade or the adaptation reset they might have got at the same time that affected more. Does anyone here have any experiance on that?
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BMW X5 3.0d 2004
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#10
10-04-2009, 04:55 PM
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Quote:
__________________
2011.5 Dinan ///M3: SSII DCT Competition Pkg Convenience Pkg Premium Pkg 2 Heated Seats Enhanced Premium Sound Black Kidney Grills BMW M Performance Steering Wheel BMW Carbon Fiber Performance Spoiler BMW Aluminum Pedals Dinan Exhaust Dinan Mid-Exhaust (x-pipe) Dinan Carbon Fiber Intake Dinan Performance Tune Dinan Pulley Kit Dinan CH-R Wheels Dinan Carbon Fiber Strut Tower Braces Arkym Front Lip Carbon Reflectors Lux H8 V3 Brembo 365mm BBK
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