BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST
>
ASS Restart with Wheel Turn
| 03-20-2014, 01:36 PM | #1 |
|
Colonel
 
155
Rep 2,266
Posts |
ASS Restart with Wheel Turn
Just wondering the thinking behind why the car will start when the wheel is turned slightly as an alternative to letting out the clutch.
__________________
 F30 Sapphire Black M-Sport 335i 6MT |
| 03-20-2014, 01:55 PM | #2 |
|
Lieutenant Colonel
 158
Rep 1,573
Posts |
not sure why they decided to do that.
i think it has something to do with the turning mechanism.....requires power from the engine? im sorry im not able to explain it technically. i know in cars with a hydraulic pump....try turning the wheel while the car is off and its difficult. turn it with the car on and its easy..........im assuming its the same case with our electric steering.
__________________
2015i Cadillac Escalade ESV
|
|
Appreciate
0
|
| 03-20-2014, 01:59 PM | #3 | |
|
Colonel
155
Rep 2,266
Posts |
Quote:
__________________
F30 Sapphire Black M-Sport 335i 6MTLast edited by snowghost; 03-20-2014 at 02:11 PM.. |
|
|
Appreciate
0
|
| 03-20-2014, 02:00 PM | #4 |
|
First Lieutenant
 
24
Rep 345
Posts |
if you're stopped and turning left or right at an intersection it tries to anticipate drivers who lean on their wheel before they come off their brakes?
__________________
---
2017 M240i xDrive Loaded 2013 328 xDrive Premium, Executive 2007 335i Premium |
|
Appreciate
0
|
| 03-20-2014, 04:03 PM | #5 |
|
Lieutenant
61
Rep 444
Posts |
Makes complete sense to me... turning the wheel with the engine off is extremely difficult. You want to turn the wheel? Engine turns on to make it easier.
|
|
Appreciate
0
|
| 03-21-2014, 08:08 AM | #6 |
|
Enlisted Member
8
Rep 45
Posts
Drives: 2013 328i, 2014 328i
Join Date: Jun 2013
Location: Alabama
|
It's part of the ECO logic. The power steering takes a lot of power from the electrical bus, so much that the bus voltage will get too low if the alternator isn't making power. So the ECU sees a demand for power steering, and starts the engine to meet the electrical demand.
|
|
Appreciate
0
|
| 03-21-2014, 08:51 AM | #7 | |
|
Banned
3262
Rep 6,299
Posts |
Quote:
|
|
|
Appreciate
0
|
| 03-21-2014, 09:04 AM | #8 |
|
First Lieutenant
24
Rep 309
Posts |
Or the fact that it's electronic steering, and I guess BMW doesn't want unassisted power to turn the electronic steering motors.
__________________
2013 BMW 335i Sedan Estoril Blue II M Sport 19" 403M|6MT|Dynamic Handling|Tech Package|Coral Red Leather|Park Distance Control|Harmon Kardon
 |
|
Appreciate
0
|
Post Reply |
| Bookmarks |
|
|
