Auto-stop and Cruise Control both not working
#1
Auto-stop and Cruise Control both not working
Just wondering if anybody has gone through this with both auto-stop and cruise control not working.
The auto-stop: even with the IMA fully charged (or just down one or two bars), the car won't go into auto-stop even, fully warmed up, after 30 miles of freeway. Then it will decide to go into auto-stop, but won't come out when I leave the brake pedal and step on the gas. They only way to get the engine to reengage is to shift into neutral (!). Then the next day, auto-stop will work perfectly.
Cruise control: very sporadic and getting worse. The car just won't go into cruise control. Turning the cruise on and off (the left button) has no effect. Again, some days are worse than others.
Both of these problems developed pretty close together, so I figure they might be related.
I've been in once and of course the car wasn't doing either of those things that day. Service said it might be related to the brake recall. After they did that, no problems for a solid week, then back again.
I'm trying to decide whether to bring it in before the big holiday week or to wait. Part of the decision is trying to figure out what it'll be like as it gets worse.
Thanks for any advice, folks!
The auto-stop: even with the IMA fully charged (or just down one or two bars), the car won't go into auto-stop even, fully warmed up, after 30 miles of freeway. Then it will decide to go into auto-stop, but won't come out when I leave the brake pedal and step on the gas. They only way to get the engine to reengage is to shift into neutral (!). Then the next day, auto-stop will work perfectly.
Cruise control: very sporadic and getting worse. The car just won't go into cruise control. Turning the cruise on and off (the left button) has no effect. Again, some days are worse than others.
Both of these problems developed pretty close together, so I figure they might be related.
I've been in once and of course the car wasn't doing either of those things that day. Service said it might be related to the brake recall. After they did that, no problems for a solid week, then back again.
I'm trying to decide whether to bring it in before the big holiday week or to wait. Part of the decision is trying to figure out what it'll be like as it gets worse.
Thanks for any advice, folks!
#2
Re: Auto-stop and Cruise Control both not working
geige:
What year and month is your HCH?
Also, when was your car last serviced by the dealer and what type of service did they perform?
Cheers;
MSantos
What year and month is your HCH?
Also, when was your car last serviced by the dealer and what type of service did they perform?
Cheers;
MSantos
#3
Re: Auto-stop and Cruise Control both not working
Auto-stop is closely related to the HVAC system, but many techs don't look there for faults. Make sure that your service looks not only in the engine and transmission controllers for faults, but the air conditioner controller as well. This is where my auto-stop issue was found.
#4
Re: Auto-stop and Cruise Control both not working
Made in May 2006.
As to service, it's had two oil changes in 11/06 and 6/06. There was a recall service in 2/06, I think for the seat belt issue. Then two weeks ago, they did the brake pedal fluid recall.
As to service, it's had two oil changes in 11/06 and 6/06. There was a recall service in 2/06, I think for the seat belt issue. Then two weeks ago, they did the brake pedal fluid recall.
Last edited by geige; 12-20-2007 at 09:48 AM.
#5
Re: Auto-stop and Cruise Control both not working
Thanks, I'll ask them to take a look there.
Auto-stop is closely related to the HVAC system, but many techs don't look there for faults. Make sure that your service looks not only in the engine and transmission controllers for faults, but the air conditioner controller as well. This is where my auto-stop issue was found.
#6
Re: Auto-stop and Cruise Control both not working
This is nuts, but I was just able to cause both conditions to occur and go away by turning the lights on and off. I'll post the outcome when I bring it in for service.
#8
Re: Auto-stop and Cruise Control both not working
I got the car back today. Apparently a rear brake light bulb had blown causing a short circuit. When I turned on the lights, the car's brain got a signal that the brake lights were on, therefore disabling auto stop and cruise control!
I hope this actually fixes it. I brought the car in a few weeks ago and they were hoping that doing the brake recall would take of it, which it seemed to for about a week.
It does make sense, though.
I hope this actually fixes it. I brought the car in a few weeks ago and they were hoping that doing the brake recall would take of it, which it seemed to for about a week.
It does make sense, though.
#10
Re: Auto-stop and Cruise Control both not working
"When I turned on the lights, the car's brain got a signal that the brake lights were on, therefore disabling auto stop and cruise control!"
Simply amazing. Cars are increadibly complex these days
Simply amazing. Cars are increadibly complex these days
Thread
Topic Starter
Forum
Replies
Last Post
rctanmd
HCH I-Specific Discussions
1
07-27-2014 06:08 PM