C63s w205 cold start
12-21-2018, 01:08 AM
#1
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C63s w205 cold start
Has anyone experienced when you start the car in the morning there is no cold start switch off start again and it activates cold start.
12-21-2018, 05:23 AM
#2
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2018 C63s Estate, 2017 gla 45 [Sold] 2017 smart 44 brabus sport [for the Mrs]
yes this depends on how warm the engine is and the fluids are. if you've been driving for an hour for example and have the car off for only a few minutes , it won't need to cold start ie idle at higher revs when you switch it on again
12-21-2018, 05:52 AM
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2018 C63s Estate, 2017 gla 45 [Sold] 2017 smart 44 brabus sport [for the Mrs]
that sounds unexpected for sure. is it only the one time that it hasn't cold started after a whole night ? I assume the engine temp was below 40 Celsius too ?
12-21-2018, 11:02 AM
#6
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Unless you live in a very hot climate that may trick cold start, then I would head to the dealer to check it out.
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
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12-21-2018, 11:14 AM
#7
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I live in South Africa, and this started about a month ago the car went into the dealer they did something with the software, it lasted only for another month until it started again.
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12-21-2018, 02:01 PM
#8
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C63s(lost)/E250/GTR(Sold)/GTS(Carbonerre)
TIPS: no cold start usually due to ECU lost engine off time data or incorrect engine off time data. May trigger by various cause.
Incorrect engine off time data may due to multiple ECU communication problem or low battery condition.
For example a normal scenario, car parked for long time ( maybe a week) will go in to no cold start mode on the first start.
Its not big deal.
Incorrect engine off time data may due to multiple ECU communication problem or low battery condition.
For example a normal scenario, car parked for long time ( maybe a week) will go in to no cold start mode on the first start.
Its not big deal.
Last edited by srO_Michael_Orz; 12-21-2018 at 02:05 PM.
12-21-2018, 02:02 PM
#9
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12-21-2018, 02:21 PM
#10
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Hard to say without touching the car.
Let dealer read out all ECU error code, and find what is the cause. If its communication error( May be between those two ECU MED1775 , IC222 ) clear it. If it goes back. then need to find the reason.
Let dealer read out all ECU error code, and find what is the cause. If its communication error( May be between those two ECU MED1775 , IC222 ) clear it. If it goes back. then need to find the reason.
12-21-2018, 02:25 PM
#11
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thank you, lets see what the AMG technical division comes up with as the dealership did send AMG a message to find a solution.
12-21-2018, 03:29 PM
#12
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2018 C63s Estate, 2017 gla 45 [Sold] 2017 smart 44 brabus sport [for the Mrs]
definitely no reason for it to skip the cold start at all. it may need a software refresh etc. glad you looked into it !
12-22-2018, 02:29 PM
#13
I have the exact same problem. It doesn’t feel right when no cold start (and its like 45f outside) and exactly as you say, turning off then turning on the car again starts the cold start
12-22-2018, 02:35 PM
#14
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[QUOTE=lovepower1;7636581]
let me tell you guys that it affects the total performance of the car, how I know this I raced my friend with a M3 competition pack and he gave me hiding of my life but prior to that I gave him a hiding of his life so that cold start thing does make a difference to the performance of the car my thought is that it is software related.
I have the exact same problem. It doesn’t feel right when no cold start (and its like 45f outside) and exactly as you say, turning off then turning on the car again starts the cold start
[/QUOTElet me tell you guys that it affects the total performance of the car, how I know this I raced my friend with a M3 competition pack and he gave me hiding of my life but prior to that I gave him a hiding of his life so that cold start thing does make a difference to the performance of the car my thought is that it is software related.
12-22-2018, 02:45 PM
#15
Hmm.. It takes way longer for the car to fully warm up and correctly, but otherwise I have not noticed any performance issues because of it.
It’s weird because now you never know if it will be a cold start or not.. before there was always a cold start.
I got a software update from dealer earlier this year (to get all the burbles and crackles) but im not sure this came after that.
It’s weird because now you never know if it will be a cold start or not.. before there was always a cold start.
I got a software update from dealer earlier this year (to get all the burbles and crackles) but im not sure this came after that.
12-22-2018, 02:51 PM
#16
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Hmm.. It takes way longer for the car to fully warm up and correctly, but otherwise I have not noticed any performance issues because of it.
It’s weird because now you never know if it will be a cold start or not.. before there was always a cold start.
I got a software update from dealer earlier this year (to get all the burbles and crackles) but im not sure this came after that.
It’s weird because now you never know if it will be a cold start or not.. before there was always a cold start.
I got a software update from dealer earlier this year (to get all the burbles and crackles) but im not sure this came after that.
well let's wait and see what response the dealership gets from AMG TECHNICAL, I will definitely let you guys know
12-23-2018, 04:43 AM
#17
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Certainly I haven't noticed that there is any subsequent performance difference. I even wondered if the car was suppressing the cold start high idle deliberately on account of it being about 6:30am (i.e. not being too loud too early in the morning)?
12-23-2018, 08:24 PM
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For those who has this "issue", please make sure the car was not parked for long time. Because when engine shut off time accumulated to certain time(I'm not sure how long, maybe few days is enough). ECU is going to no "clod start mode" on the next first start, and this is 100% normal!
Last edited by srO_Michael_Orz; 12-23-2018 at 08:31 PM.
12-24-2018, 03:50 AM
#19
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For those who has this "issue", please make sure the car was not parked for long time. Because when engine shut off time accumulated to certain time(I'm not sure how long, maybe few days is enough). ECU is going to no "clod start mode" on the next first start, and this is 100% normal!
guys the dealership got back to me and it is exactly why Michael has stated.
12-24-2018, 04:36 AM
#21
Interesting, so maybe that is the reason. I will try to notice when it happens and how long the car have sit for next time. But we are talking about 2-3 days only.
Did explain further - any reason it does that? Why no cold start when it has been sit for a longer time? Not even just a higher rev, it starts up like its warm lol (first time it happen i thought someone had been driving it)
Did explain further - any reason it does that? Why no cold start when it has been sit for a longer time? Not even just a higher rev, it starts up like its warm lol (first time it happen i thought someone had been driving it)
12-24-2018, 04:40 AM
#22
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Interesting, so maybe that is the reason. I will try to notice when it happens and how long the car have sit for next time. But we are talking about 2-3 days only.
Did explain further - any reason it does that? Why no cold start when it has been sit for a longer time? Not even just a higher rev, it starts up like its warm lol (first time it happen i thought someone had been driving it)
Did explain further - any reason it does that? Why no cold start when it has been sit for a longer time? Not even just a higher rev, it starts up like its warm lol (first time it happen i thought someone had been driving it)
12-24-2018, 05:57 AM
#23
Senior Member
AMG states that this issue is unknown. It was first noticed in the German version of the C63 with the latest ECU-update (dated early summer 2018) over here. The car will not apply the cold start procedure, even though all preconditions to do so are met.
This is not only a problem for us customers, this is also a legal problem, as the car does not fulfill emission regulations anymore. At least for european laws, the cold start procedure must be applied, as it warms up the catalytic converters way faster than without. In a German Car forum, some guys wrote that AMG asked them to record their "cold start" for them.
This is not only a problem for us customers, this is also a legal problem, as the car does not fulfill emission regulations anymore. At least for european laws, the cold start procedure must be applied, as it warms up the catalytic converters way faster than without. In a German Car forum, some guys wrote that AMG asked them to record their "cold start" for them.
12-24-2018, 06:26 AM
#24
Junior Member
Thread Starter
AMG states that this issue is unknown. It was first noticed in the German version of the C63 with the latest ECU-update (dated early summer 2018) over here. The car will not apply the cold start procedure, even though all preconditions to do so are met.
This is not only a problem for us customers, this is also a legal problem, as the car does not fulfill emission regulations anymore. At least for european laws, the cold start procedure must be applied, as it warms up the catalytic converters way faster than without. In a German Car forum, some guys wrote that AMG asked them to record their "cold start" for them.
This is not only a problem for us customers, this is also a legal problem, as the car does not fulfill emission regulations anymore. At least for european laws, the cold start procedure must be applied, as it warms up the catalytic converters way faster than without. In a German Car forum, some guys wrote that AMG asked them to record their "cold start" for them.
eish then i dont know hey.
12-24-2018, 10:21 AM
#25
AMG states that this issue is unknown. It was first noticed in the German version of the C63 with the latest ECU-update (dated early summer 2018) over here. The car will not apply the cold start procedure, even though all preconditions to do so are met.
This is not only a problem for us customers, this is also a legal problem, as the car does not fulfill emission regulations anymore. At least for european laws, the cold start procedure must be applied, as it warms up the catalytic converters way faster than without. In a German Car forum, some guys wrote that AMG asked them to record their "cold start" for them.
This is not only a problem for us customers, this is also a legal problem, as the car does not fulfill emission regulations anymore. At least for european laws, the cold start procedure must be applied, as it warms up the catalytic converters way faster than without. In a German Car forum, some guys wrote that AMG asked them to record their "cold start" for them.
