2 second lag

daninsyd · 02-14-2012, 05:47 AM

Hi All, wondering if this is unique to my car, if im parking and i go change from reverse to Drive (DTC auto/man 35is) there seems to be a 2 second lag where the hill holder does not engage. I unknowingly parked on a hill, reversed in and changed quickly to drive and put my foot on the accelerator only to have the car roll back about 1 meter before Drive kicked in, luckily there was no car behind me, now i put my foot on the brake and wait until i feel the car pull slightly then release.....

thoughts?

Constant.S · 02-14-2012, 06:04 AM

I had exactly the same "DCT lag" when i bought the Z back in 2009, I didnt mind it much and the lag went away after a firmware update the car had at the dealership.

daninsyd · 02-14-2012, 06:07 AM

Quote:

Originally Posted by Constant.S

I had exactly the same "DCT lag" when i bought the Z back in 2009, I didnt mind it much and the lag went away after a firmware update the car had at the dealership.

ah brilliant!!! will take it in asap!! thanks so much!!!

ManiacGT · 02-14-2012, 11:06 AM

I think you might be at cross purposes... the OP is talking about hill assist I think. The lag on DCT was when it couldn't decide which gear was next under normal driving conditions. There has always been a lag changing between reverse and forward gears and this hasn't been solved for most people. For the hill assist to work you must be stationary, so, you would reverse into the space, put your foot on the brake, engage drive, wait for it to change gear and the hill assist will also apply the brake at this point, then drive forward as required.

02-14-2012, 05:47 AM	#1
daninsyd Second Lieutenant 28 Rep 260 Posts Drives: e92 335i Join Date: Jan 2007 Location: australia iTrader: (0)	2 second lag Hi All, wondering if this is unique to my car, if im parking and i go change from reverse to Drive (DTC auto/man 35is) there seems to be a 2 second lag where the hill holder does not engage. I unknowingly parked on a hill, reversed in and changed quickly to drive and put my foot on the accelerator only to have the car roll back about 1 meter before Drive kicked in, luckily there was no car behind me, now i put my foot on the brake and wait until i feel the car pull slightly then release..... thoughts?
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02-14-2012, 06:04 AM	#2
Constant.S Resistance is futile... 54 Rep 640 Posts Drives: BMW Z4 E89(N54) Join Date: Nov 2010 Location: Greece/Canada iTrader: (0)	I had exactly the same "DCT lag" when i bought the Z back in 2009, I didnt mind it much and the lag went away after a firmware update the car had at the dealership. __________________ An ounce of performance is worth pounds of promises.
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02-14-2012, 11:06 AM	#4
ManiacGT Major 85 Rep 1,448 Posts Drives: Z4 sDrive 35i Join Date: Jan 2011 Location: Manchester, UK iTrader: (0)	I think you might be at cross purposes... the OP is talking about hill assist I think. The lag on DCT was when it couldn't decide which gear was next under normal driving conditions. There has always been a lag changing between reverse and forward gears and this hasn't been solved for most people. For the hill assist to work you must be stationary, so, you would reverse into the space, put your foot on the brake, engage drive, wait for it to change gear and the hill assist will also apply the brake at this point, then drive forward as required.
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