525 da - Nervous cruise control
02-07-2006, 11:49 AM
#11
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My Ride: E61 530d Touring, May 2004
I find the cruise works perfectly smothly on my 04 530d.
In cruise or manual, the autobox kicks down far too often for such a torquey engine. Hence spend most time manually locked into M6 if cruising. (Show me a clear & twisty hill road and we're out of cruise in a flash and using the manual selector for different reasons!)
In cruise or manual, the autobox kicks down far too often for such a torquey engine. Hence spend most time manually locked into M6 if cruising. (Show me a clear & twisty hill road and we're out of cruise in a flash and using the manual selector for different reasons!)
02-07-2006, 12:42 PM
#12
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Originally Posted by new-kid' post='236325' date='Feb 7 2006, 08:49 PM
I find the cruise works perfectly smothly on my 04 530d.
In cruise or manual, the autobox kicks down far too often for such a torquey engine. Hence spend most time manually locked into M6 if cruising. (Show me a clear & twisty hill road and we're out of cruise in a flash and using the manual selector for different reasons!)
In cruise or manual, the autobox kicks down far too often for such a torquey engine. Hence spend most time manually locked into M6 if cruising. (Show me a clear & twisty hill road and we're out of cruise in a flash and using the manual selector for different reasons!)
02-07-2006, 01:12 PM
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I have exactly the same on a 2003 530d with Steptronic. At 80km/h or 110km/h on Cruise Control there is a slight variation in RPM and you feel the car decelleration/accelerating ever so slightly. Doesn't happen always but often. A software change did not help. I am not bothered because I really have to pay attention to notice.
02-07-2006, 01:52 PM
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My Ride: 535D Sport Auto
Originally Posted by Bobkare' post='236066' date='Feb 7 2006, 03:25 AM
I've noticed that when I use the cruise control (approx. 100km/t) the car behaves somewhat nervous. What I mean by that is that you can feel the car giving more or less throttle, it kind of feels like a very soft gear shift.
I believe this annoying behaviour is connected to the high torque turbo diesel engine. Any thoughts?
Anyone else annoyed with a nervous cruise control?
Could this be improved by a software update? I have CIP 19.2?
03-01-2006, 05:48 AM
#16
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I took the car for a test drive today to do a more accurate test.
First let me emphasise the problem. Whilst driving with the cruise control activated a soft throttling de-throttling can be sensed. No big deal, but I think it should not have been there. It has nothing to do with the fact that the car accelerates when a new set point is given.
I've managed to isolate the problem. The problem occurs when I drive around 1500rpm at 110km/h, but only when in the 6th gear. You can then sense the problem, but you can also see it as a small "vibration" in the rev-needle, which indicates that a throttling de-throttling process is constantly ongoing. However, it is very soft but it is noticeable.
Make a test drive, and check if you got this behaviour as well!
Responses are appreciated
First let me emphasise the problem. Whilst driving with the cruise control activated a soft throttling de-throttling can be sensed. No big deal, but I think it should not have been there. It has nothing to do with the fact that the car accelerates when a new set point is given.
I've managed to isolate the problem. The problem occurs when I drive around 1500rpm at 110km/h, but only when in the 6th gear. You can then sense the problem, but you can also see it as a small "vibration" in the rev-needle, which indicates that a throttling de-throttling process is constantly ongoing. However, it is very soft but it is noticeable.
Make a test drive, and check if you got this behaviour as well!
Responses are appreciated
03-01-2006, 08:46 AM
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My Ride: 525d, build 3/2005, Silbergrau, Steptronic,Servotronic, Trailer tow hicth, Through-loading system incl ski bag, Cruise control, Winter packet
Hi!
I tested this evening cruise control setting speed to 110 km/h. I couldn't sense any oscilation in throttling either see any movement in rev needle. I have no idea of CIP version, but my car is build in March 2005.
I tested this evening cruise control setting speed to 110 km/h. I couldn't sense any oscilation in throttling either see any movement in rev needle. I have no idea of CIP version, but my car is build in March 2005.
03-01-2006, 12:48 PM
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My Ride: 535d 2005
Originally Posted by Bobkare' post='247760' date='Mar 1 2006, 02:48 PM
I took the car for a test drive today to do a more accurate test.
First let me emphasise the problem. Whilst driving with the cruise control activated a soft throttling de-throttling can be sensed. No big deal, but I think it should not have been there. It has nothing to do with the fact that the car accelerates when a new set point is given.
I've managed to isolate the problem. The problem occurs when I drive around 1500rpm at 110km/h, but only when in the 6th gear. You can then sense the problem, but you can also see it as a small "vibration" in the rev-needle, which indicates that a throttling de-throttling process is constantly ongoing. However, it is very soft but it is noticeable.
Make a test drive, and check if you got this behaviour as well!
Responses are appreciated
First let me emphasise the problem. Whilst driving with the cruise control activated a soft throttling de-throttling can be sensed. No big deal, but I think it should not have been there. It has nothing to do with the fact that the car accelerates when a new set point is given.
I've managed to isolate the problem. The problem occurs when I drive around 1500rpm at 110km/h, but only when in the 6th gear. You can then sense the problem, but you can also see it as a small "vibration" in the rev-needle, which indicates that a throttling de-throttling process is constantly ongoing. However, it is very soft but it is noticeable.
Make a test drive, and check if you got this behaviour as well!
Responses are appreciated
couple of days ago I noticed the same problem with cruise control on at 76mph. I did not check the rev-needle, but every 3-5 seconds it feels like de-throttling and then throttling again.
Software was recently updated to 20.01, I did not notice this behaviour before the update.
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