318ti.org forum

Go Back   318ti.org forum > Technical, Maintenance and Modifications > Electrical

Notices

Electrical All wiring questions.

.
» Recent Threads
Blower Motor and Resistor
02-22-2018 03:17 AM
Last post by Johjamkep
Today 09:27 PM
2 Replies, 262 Views
WTB: sand grey cloth...
02-20-2018 03:29 AM
Last post by e30/e36_kid89
Today 04:44 AM
1 Replies, 316 Views
Miscellaneous Parts for...
02-13-2018 10:56 PM
Last post by e30/e36_kid89
Today 04:44 AM
16 Replies, 1,636 Views
Half Shaft Boot Info
Today 12:51 AM
Last post by sirius815
Today 12:51 AM
0 Replies, 97 Views
Possible EWS Issue?
Yesterday 10:59 PM
Last post by reeve509
Yesterday 10:59 PM
0 Replies, 107 Views
FS: Racing Dynamics 16 x...
01-03-2018 03:04 PM
Last post by manydubs
02-22-2018 02:11 PM
7 Replies, 1,547 Views
How to program a new key...
09-08-2008 05:53 AM
Last post by ///msport
02-22-2018 01:04 PM
61 Replies, 37,994 Views
Shift lever question
02-16-2018 05:44 AM
Last post by SourKraut
02-22-2018 02:10 AM
7 Replies, 575 Views
What rear springs for...
02-20-2018 01:18 AM
Last post by manydubs
02-21-2018 05:46 PM
4 Replies, 424 Views
New M42/M44 long tube...
02-21-2018 01:36 AM
Last post by Mr.Squeelerz
02-21-2018 05:43 PM
2 Replies, 346 Views
Reply Share/Bookmark
 
Thread Tools Display Modes
Old 03-11-2012, 04:30 PM   #1
70boss2
Junior Member
 
Join Date: Dec 2007
Location: WV
Posts: 12
iTrader: (0)
Question Cruise control kicks off when cold

I have a 98 ti with factory cruise. It has worked fine for the first 150k mi. Now if I set it on a cold day (less than 30 deg F) it has the bad habit of kicking off. It will stay on for a few seconds, then kick off. It will re-engage (If I push the level) and kick off again. Then after I've been on the road for a while (10 min.) it will stay on. This never happens when it's warm, and is way worse when it's colder (less than 20 deg F). Any thoughts?
70boss2 is offline   Reply With Quote
Old 03-11-2012, 05:03 PM   #2
hotmilk400
Senior Member
 
hotmilk400's Avatar
 
Join Date: Apr 2008
Location: Bethlehem, PA
Posts: 1,106
iTrader: (13)
Default

Mine does the same thing. Not really sure, but just wanted to let you know you are not alone. I always assumed that it was due to load on the motor or something related to the temp and motor temp. i dunno.

do you have a 5sp or auto? mine is 5sp, so maybe related to type of trans too.
__________________
Check out our new website! https://soltechsolutionsllc.com/

Green Your Decor with the Aspect! Shop for the Grow Light Used by Interior Designers, Growers & People Like You!
hotmilk400 is offline   Reply With Quote
Old 03-11-2012, 07:11 PM   #3
geetarspaz
Senior Member
 
geetarspaz's Avatar
 
Join Date: May 2011
Location: Philly
Posts: 605
Vehicles
iTrader: (-1)
Default

(guess)
maybe it is some safety feature?
sort of like how when its colder than 37* the small LCD will beep and display the temperature
geetarspaz is offline   Reply With Quote
Old 03-11-2012, 07:28 PM   #4
1996 328ti
Senior Member
 
1996 328ti's Avatar
 
Join Date: Jun 2003
Location: Greenville, SC
Posts: 9,277
Vehicles
iTrader: (1)
Default

I wonder if the ASC-T light flashes at the same time the cruise kicks off?
__________________
...steven
BMW CCA #146825
1995 BMW 318ti Club Sport ē 1996 BMW 328ti ē 2003 MINI Cooper S
www.bmwcca.org
1996 328ti is offline   Reply With Quote
Old 03-11-2012, 07:58 PM   #5
hotmilk400
Senior Member
 
hotmilk400's Avatar
 
Join Date: Apr 2008
Location: Bethlehem, PA
Posts: 1,106
iTrader: (13)
Default

yeah, i assume it has to do with temp of something (like temp of motor, how it runs do to temp, the cat, the trans) no, no lights flash. if you set it, it might stay set for anywhere from 2 seconds to 5 seconds. should not be load, since it will do it even if you are going down a hill and at any speed. sometimes if you continue to set it, it will stop kicking off and work fine.

i never use it much except for long trips, but my car is normally warm enough and will not kick off by then.

that is just me though, i assume everyone will have similar issues.
__________________
Check out our new website! https://soltechsolutionsllc.com/

Green Your Decor with the Aspect! Shop for the Grow Light Used by Interior Designers, Growers & People Like You!
hotmilk400 is offline   Reply With Quote
Old 03-23-2012, 12:13 PM   #6
70boss2
Junior Member
 
Join Date: Dec 2007
Location: WV
Posts: 12
iTrader: (0)
Default

Thanks for the replies. Especially the one that confirmed I'm not alone.
It is a 5 speed. I've had the car for 4 yrs from 70,000 to now at 164,000. I added an OBC to it, but there is no connection between the cruise and the OBC (except for the serial link, but I doubt they use that for actual vehicle control functions.)

I've had the mechanical cruise unit apart, and everything looks perfect in there. My theory is that it has to do with the temperature of the electric motor it's self. That is, that the bearings in it bind up when it's cold and as it warms the motor has less internal drag. It's warm now and it works first time every time!

If there was a way to oil the motor I'd try that. Anyone tried that?
70boss2 is offline   Reply With Quote
Old 03-23-2012, 07:39 PM   #7
zoner
Senior Member
 
zoner's Avatar
 
Join Date: Oct 2008
Location: Los Angeles, CA
Posts: 1,463
iTrader: (7)
Default

I have heard of several instances where people comment that their cruise control on BMW's does not work in temps. below 35*-40*. My take is that this IS, in fact, a safety feature that is probably also somehow connect to the chime you hear when outside temps get near the freezing point.

If you hit a patch of black ice, you definitely do NOT want your cruise control engaged- BMW engineers are probably just ensuring that you cannot engage the cruise control in freezing temps, when a driver probably should be paying a little more direct attention to things like throttle and braking.
zoner is offline   Reply With Quote
Old 03-24-2012, 01:06 AM   #8
John_in_VA
Senior Member
 
Join Date: Aug 2010
Location: Leesburg. VA
Posts: 121
iTrader: (0)
Default

I am skeptical of the cold temp/safety business. I have an E28 that had an intermittent CC, possibly due to a circuit board solder problem. The easiest/cheapest solution was to replace the CC brain/box.
John_in_VA is offline   Reply With Quote
Old 03-25-2012, 06:49 PM   #9
70boss2
Junior Member
 
Join Date: Dec 2007
Location: WV
Posts: 12
iTrader: (0)
Default

Ahh the old undocumented safety feature.. that's it, ya.. that the ticket;-)
( It used work at all temperatures, no problems.)
70boss2 is offline   Reply With Quote
Old 03-29-2012, 04:53 AM   #10
JustinH
Member
 
Join Date: Mar 2010
Location: Massachusetts
Posts: 75
iTrader: (0)
Default

It's not a safety feature. The extreme temperature puts stress on an instable electrical component somewhere in your system. Could be a speed sensor, could be the actuator, could be the ground, could be the harness. Need to do some looking around and diagnosing.
JustinH is offline   Reply With Quote
Reply

Bookmarks

Tags
cold , cruise , cruise control , electrical problem


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Cruise control wimpy ti Engine Swaps 0 07-07-2011 10:35 AM
Brake switch for Cruise Control BobbyDigital Electrical 23 10-12-2007 08:52 PM
cruise control bigdrews318 Misc 2 09-29-2007 05:07 PM
Cruise Control actuator and control unit mohaughn US and North America 8 02-22-2007 03:13 AM
Question on Cruise Control L84THSKY Electrical 31 01-31-2006 11:39 PM


All times are GMT +1. The time now is 10:56 PM.


.
Powered by site supporters
vBulletin Version 3.8.8
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright ©1999 - 2018, 318ti.org
© vBadvanced CMPS v3.2.2
[page compression: 103.33 k/122.04 k (15.34%)]

318ti.org does not warrant or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information or products discussed.