Delayed Downshifting in Auto Transmission - BMW Forum - BimmerWerkz.com
5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 02-21-2004, 09:25 PM
5th Gear Member
 
CosmosBlack's Avatar
 
Join Date: Jul 2003
Location: Florida
Posts: 1,289
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute
(Thread Starter)
Thumbs up

Lately I have noticed that sometimes my car would have a delay in downshifting.
When I am slowing down to a stop, say at the lights...normally, the gears would downshift gradually and smoothly. Sometimes, though, there would be a delay in the downshift, meaning that only when the car is almost at a complete stop, it abruptly downshifts and you can feel a slight jerk as a result of that. When this happens, it reoccurs several times during the same driving session whenever I come to a stop, usually at the lights. If I stop the car and switch the engine off, then the next time I start and drive, the problem would be gone (until when it decides to haunt me again).

This doesn't happen often, but when it does, it's annoying and makes me wonder if the gearbox or transmission is about to breakdown on me! Could this be a possible software or electronics issue? Or is it an early warning sign of a bigger problem to come?

Anyone has any ideas on this one? Thanks!

2012 Porsche 911 GTS
2008 ford F150 Foose Edition
2010 VW Touareg

----------------------------------
Gone...2002 Porsche 911 C4S
Gone...2000 BMW 540i
Gone...1995 BMW 540i
CosmosBlack is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 02-21-2004, 09:49 PM
2nd Gear Member
 
EXtech's Avatar
 
Join Date: Jul 2003
Location: Texas
Posts: 497
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
EXtech is an unknown quantity at this point
could be a possible software glitch. I think maybe there's a trans problem. There used to be a problem with one of the fluid pressure switches inside the trans. There were also some valve body recalls but mostly in the 3 series. Do you have a CPO or extended warranty on it? There's probably a fault stored in the EGS module for whatever is causing your problem. Unfortunately the dealer will be the best place for the diagnosis to be done. Their diagnostic equipment is far superior to anywhere elses in this instance. Maybe you could have TECH run a service bulletin search on the problem. I think the software update will cure the problem but while they are in there they can check the faults.

STETT Performance -
Everything BMW
921 J Place, Suite 200
Plano, TX 75074
469-767-3309

OEM Repairs and Maintenance
Extended Warranty Service
Pre-Purchase Inspections
Everything Performance (brakes, turbos, Nitrous, Cams, Complete Engines, Clutches/Flywheels etc)
-----------

STETT Performance Official Grand Opening BMW Meet, May 6th 11A-3P -- Music, Food, Drawings and Tons of BMW's go to http://206.123.107.13/stett and register.. it's FREE
EXtech is offline  
#3 (permalink) Old 02-21-2004, 10:24 PM
5th Gear Member
 
CosmosBlack's Avatar
 
Join Date: Jul 2003
Location: Florida
Posts: 1,289
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute
(Thread Starter)
Thanks ExTech,

Unfortunately, I do not have any kind of warranty on the car now. It's a scary thought to have the dealer inspect the problem...they are sure to recommend to replace something! Sometimes (from past experiences) unnecessary replacements! But if it's the only way to solve the problem, I guess I have to let the dealer rip me off this time.

Do you think it will hurt anything if I keep driving with this occasional problem?

Yeah, and it woudl be great if TECH would run a service bulletin search on the problem.

2012 Porsche 911 GTS
2008 ford F150 Foose Edition
2010 VW Touareg

----------------------------------
Gone...2002 Porsche 911 C4S
Gone...2000 BMW 540i
Gone...1995 BMW 540i
CosmosBlack is offline  
#4 (permalink) Old 02-22-2004, 02:45 PM
2nd Gear Member
 
EXtech's Avatar
 
Join Date: Jul 2003
Location: Texas
Posts: 497
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
EXtech is an unknown quantity at this point
It may or it may not hurt anything. That depends on what exactly the problem is. I would suggest tracking down TECH and have him run an SIB search and then you may be able to have the dealership do it under the bulletin and possibly not pay for it.

STETT Performance -
Everything BMW
921 J Place, Suite 200
Plano, TX 75074
469-767-3309

OEM Repairs and Maintenance
Extended Warranty Service
Pre-Purchase Inspections
Everything Performance (brakes, turbos, Nitrous, Cams, Complete Engines, Clutches/Flywheels etc)
-----------

STETT Performance Official Grand Opening BMW Meet, May 6th 11A-3P -- Music, Food, Drawings and Tons of BMW's go to http://206.123.107.13/stett and register.. it's FREE
EXtech is offline  
#5 (permalink) Old 02-26-2004, 07:42 PM
2nd Gear Member
 
TECH's Avatar
 
Join Date: Jan 2004
Posts: 434
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
TECH is an unknown quantity at this point
I replied to your email..........

Bulletin numbers 24 03 00, or 24 04 00 should fix you up. They are both software updates for harsh downshifts....
TECH is offline  
#6 (permalink) Old 03-02-2004, 11:56 PM
5th Gear Member
 
CosmosBlack's Avatar
 
Join Date: Jul 2003
Location: Florida
Posts: 1,289
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute
(Thread Starter)
Thanks Tech!!! I will post after I get this update done,

2012 Porsche 911 GTS
2008 ford F150 Foose Edition
2010 VW Touareg

----------------------------------
Gone...2002 Porsche 911 C4S
Gone...2000 BMW 540i
Gone...1995 BMW 540i
CosmosBlack is offline  
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 5-Series (E12,E28, E34, E39, E60)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Bmw Track Times dutchbmw Bimmer Talk/Motorsports Talk 2 06-25-2005 08:05 AM
Auto Transmission TrannyTrubl 3-Series (E21, E30) 6 05-13-2005 10:32 AM
Changing Auto Transmission Fluid billB 5-Series (E12,E28, E34, E39, E60) 8 10-11-2004 09:12 PM
transmission problems 94 318 IS Auto ultraviolet353 3-Series (E36) 6 08-05-2004 12:40 AM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome