crank sensor
Thread Starter
Member
Joined: Sep 2009
Posts: 82
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2006 c230
crank sensor
hello everyone 
so about a 2 weeks ago the check engine light came on the car and once i turn the car off the check engine light will go off which is happened couples of times during a week so took the car to the shop i usaullay go to and they said it's the crank sensor so i got that replaced and they never clear the code. i was driving the car yesterday and going up to the mountain and once i was making it my way back down the check engine light came back on, turn the car off after an hour the light were gone been driving almost all day today and the light never came back on. do you guys think that happened cuze they never clear the code or there is something else is going on? i'm taking the car back to the shop in couple days since i don't have time but would like to hear from you guys it thats ever happened with you
so about a 2 weeks ago the check engine light came on the car and once i turn the car off the check engine light will go off which is happened couples of times during a week so took the car to the shop i usaullay go to and they said it's the crank sensor so i got that replaced and they never clear the code. i was driving the car yesterday and going up to the mountain and once i was making it my way back down the check engine light came back on, turn the car off after an hour the light were gone
been driving almost all day today and the light never came back on. do you guys think that happened cuze they never clear the code or there is something else is going on? i'm taking the car back to the shop in couple days since i don't have time but would like to hear from you guys it thats ever happened with you
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Joined: Feb 2009
Posts: 5,054
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From: fort worth, tx
06 C230 SS 6spd
i would take it to an autoparts store and have it read when it comes back on again to make sure its the correct code for the crank sensor. If the crank sensor was going back youd start to have problems with the car turning over when trying to start it. Just turning the car on and off to clear it isnt such a good idea. If the car is running fine when the CEL comes on just drive it to the closest autoparts store and have them read the code so they can tell you the issue.
Most CEL are stored until its been cleared. Have it cleared after figuring out the issue and if it comes back on youll know thats really the issue and have it replaced.
Most CEL are stored until its been cleared. Have it cleared after figuring out the issue and if it comes back on youll know thats really the issue and have it replaced.
Super Member
Joined: May 2009
Posts: 904
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From: Toronto, Ontario, Canada, eh!
2003 C230 Sports Coupe, Paprika Metallic Red, Auto, Pano, Leather
Technically, when replacing CPS, it should be recalibrated using MB STAR Diagnostic System. But it seem it can recalibrate itself over time,.... or you can try to help it recalibrate by putting it in 3rd then half throttle to 4K rpm,... do this twice.
Thread Starter
Member
Joined: Sep 2009
Posts: 82
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2006 c230
i would take it to an autoparts store and have it read when it comes back on again to make sure its the correct code for the crank sensor. If the crank sensor was going back youd start to have problems with the car turning over when trying to start it. Just turning the car on and off to clear it isnt such a good idea. If the car is running fine when the CEL comes on just drive it to the closest autoparts store and have them read the code so they can tell you the issue.
Most CEL are stored until its been cleared. Have it cleared after figuring out the issue and if it comes back on youll know thats really the issue and have it replaced.
Most CEL are stored until its been cleared. Have it cleared after figuring out the issue and if it comes back on youll know thats really the issue and have it replaced.
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Joined: Sep 2009
Posts: 82
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2006 c230
thanks for the info, i'll try that tomorrow before i dive it up to the same place and see what will happen, it's really strange that the cel come on only when i drive up to the hill or down but driving in the city never cuze that
Super Member
Joined: May 2009
Posts: 904
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From: Toronto, Ontario, Canada, eh!
2003 C230 Sports Coupe, Paprika Metallic Red, Auto, Pano, Leather
So did it work?
If you had NO cps faults prior to change then no recalibration needed.
If you had cps faults,... ideally STAR to recalibrate. Or in PARK, rev slowly up to 2500RPM in 2 minute,.... then hold at 2500RPM for 30 seconds; then drive,.... that should recalibrate the CPS.
If you had NO cps faults prior to change then no recalibration needed.
If you had cps faults,... ideally STAR to recalibrate. Or in PARK, rev slowly up to 2500RPM in 2 minute,.... then hold at 2500RPM for 30 seconds; then drive,.... that should recalibrate the CPS.
Super Moderator
Joined: Dec 2006
Posts: 2,403
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From: Camas, WA
2007 C230SS; 2014 ML350 BT
I have a STAR system and never bothered to calibrate the CPS after replacement and never had an issue. I would drive it for a while Jerry and see if the CEL goes away on it's own.
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Super Member
Joined: May 2009
Posts: 904
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From: Toronto, Ontario, Canada, eh!
2003 C230 Sports Coupe, Paprika Metallic Red, Auto, Pano, Leather
Well,.... then you got lucky.
But according to Mercedes,.... whenever the CPS gets changed it MUST be recalibrated. The best way to recalibrate the CPS is using STAR. The method I specified is more of a hack then a sure thing,... it forces the car to recalibrate it itself.
Anyways,.... whether you recalibrate or not is really up to you,.... if not then, there's a higher probability that it will still randomly stall or randomly not start at all,.... as a poster recently said,... a car with a faulty CPS is like a women on menopause,..... Personally, I wouldn't mess with a women on menopause. So are ya still feeling lucky?
But according to Mercedes,.... whenever the CPS gets changed it MUST be recalibrated. The best way to recalibrate the CPS is using STAR. The method I specified is more of a hack then a sure thing,... it forces the car to recalibrate it itself.
Anyways,.... whether you recalibrate or not is really up to you,.... if not then, there's a higher probability that it will still randomly stall or randomly not start at all,.... as a poster recently said,... a car with a faulty CPS is like a women on menopause,..... Personally, I wouldn't mess with a women on menopause. So are ya still feeling lucky?
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