Limp home mode (engine fault, dsc not available, parking brake error)
#1
Limp home mode (engine fault, dsc not available, parking brake error)
A couple minutes after starting my 09 XF (non SC) and driving off yesterday I got the dreaded engine/dsc/parking brake fault. The car wouldn't change gears and I couldn't accelerate at all. I stopped the car and shut it down then restarted. At this point the car wouldn't shift out of park and i felt a noticeable engine shudder accompanied by a check engine light. I restarted the car again and it was driveable although the engine fault was still displayed.
I just wanted to get the car to a safe place so I pulled into a parking lot, shut it down and locked the car. Waited 30 seconds and restarted and all was good. Error hasn't reoccurred so far.
Could this be due to excessive draw to the battery? I had all the systems going (AC, sound system, etc) from the time I started the car and was pushing the car pretty hard right from the get go. I swapped the battery out 5 months ago so it's fairly new, although I haven't tested the battery or alternator to verify proper working order.
I've also read that this error could be due to a bad throttle body sensor or perhaps even a bad ground somewhere. Any advice?
Thanks all
I just wanted to get the car to a safe place so I pulled into a parking lot, shut it down and locked the car. Waited 30 seconds and restarted and all was good. Error hasn't reoccurred so far.
Could this be due to excessive draw to the battery? I had all the systems going (AC, sound system, etc) from the time I started the car and was pushing the car pretty hard right from the get go. I swapped the battery out 5 months ago so it's fairly new, although I haven't tested the battery or alternator to verify proper working order.
I've also read that this error could be due to a bad throttle body sensor or perhaps even a bad ground somewhere. Any advice?
Thanks all
Last edited by nasa25; 04-12-2014 at 09:26 AM.
#2
#3
I appreciate the feedback
#4
With the CEL having been illuminated, there should be stored codes which will help diagnose the cause.
Great that you got started again and completed your journey but it usually takes more than a doubtful battery or low state of charge to make this occur on an engine at normal operating temperature.
I would have both the battery checked and the codes read.
Graham
Great that you got started again and completed your journey but it usually takes more than a doubtful battery or low state of charge to make this occur on an engine at normal operating temperature.
I would have both the battery checked and the codes read.
Graham
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nasa25 (04-12-2014)
#5
[QUOTE=nasa25;952965]I just wanted to get the car to a safe place so I pulled into a parking lot, shut it down and locked the car. Waited 30 seconds and restarted and all was good. Error hasn't reoccurred so far.[QUOTE]
What you descibed happened 2 or 3 times during the 3+ years that I had a 2009. It is a computer startup glich and is cleared exactly as you mentioned. Moreoften, the climate control AC would not work at startup and that was cleared by just shutting the car down and restarting. Jag issured a software fix at some point to aleviate the AC problem but I can't remember if the engine startup problem occured after that point.
What you descibed happened 2 or 3 times during the 3+ years that I had a 2009. It is a computer startup glich and is cleared exactly as you mentioned. Moreoften, the climate control AC would not work at startup and that was cleared by just shutting the car down and restarting. Jag issured a software fix at some point to aleviate the AC problem but I can't remember if the engine startup problem occured after that point.
The following users liked this post:
nasa25 (04-13-2014)
#6
[QUOTE=Jerry S;953591][QUOTE=nasa25;952965]I just wanted to get the car to a safe place so I pulled into a parking lot, shut it down and locked the car. Waited 30 seconds and restarted and all was good. Error hasn't reoccurred so far.
What you descibed happened 2 or 3 times during the 3+ years that I had a 2009. It is a computer startup glich and is cleared exactly as you mentioned. Moreoften, the climate control AC would not work at startup and that was cleared by just shutting the car down and restarting. Jag issured a software fix at some point to aleviate the AC problem but I can't remember if the engine startup problem occured after that point.
Thanks for the feedback. Everything has been ok the past couple of days (I took a long 125 mile round trip journey yesterday). I'll inquire about the software fix next time I'm at the dealer.
Interestingly enough the dealer just reflashed my tpms software last week. I'll get them to apply all the available software reflashes next time I'm there.
What you descibed happened 2 or 3 times during the 3+ years that I had a 2009. It is a computer startup glich and is cleared exactly as you mentioned. Moreoften, the climate control AC would not work at startup and that was cleared by just shutting the car down and restarting. Jag issured a software fix at some point to aleviate the AC problem but I can't remember if the engine startup problem occured after that point.
Interestingly enough the dealer just reflashed my tpms software last week. I'll get them to apply all the available software reflashes next time I'm there.
#8
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