advans

Hey guys,

I've recently noticed a few issues on the C55, wondering if anyone has similar issues.

1. Hesitation from cold start: seems like the car doesn't want to start up. The start up on my C320 was really quick, so I'm not sure if there's anything wrong with that?

2. Very Hot heated Seats: My drivers side heated seats burn! like seriously. it gets so hot I have to lift my *** up and turn it off.

any clue?

jturkel

I have 100% had this on my 2002 C32 before. Brought it in.....they did something with the seat module....i don't remember if they replaced it or what they did....i think it was drawing too much current or something. idk.

TemjinX2

maybe new spark plugs or battery. you usually need more cranking amps to crank your car in cold weather. if the battery is kinda old then it might be a good time to replace it.

advans

the car is a 2005, with 28,000 miles!

i'm gonna call the dealer, and setup a service appt.

boohooramblers

Please give us an update / diagnosis when you get your service appointment.

It seems that several members have had starting / cranking issues lately that are not due to the battery or CPS.

TemjinX2

might just be the battery...those are really low miles for a 2005. thats only 7k a yr, not many miles for the battery to be recharged.

advans

I'll def update this after I get my service done.

TemjinX2

i hope it all works out...

Jons95c36amg

Be specific. Does it crank slow? Which means battery is not fully charged. How often do you drive it?

advans

yeah it cranks slow, like its choking.

I drive it nearly every day, or every other day. Even if I leave it in my garage for a few hours (im sure its still a cold start) it still cranks like its choking on something.

SoCalC55

Ive had a similar problem; at cold start it dosent turn over near as fast as it should. I took it into the dealership (AH Mercedes) to have them take a look at it. They said it hasnt threw any codes nor could they see any specific problem that would cause it not to start correctly. Im just keeping an eye on it and if it gets worse they told me to take it back in and they will do a full overhaul.

AMG Sleeper

if there's no codes, it may just be that you need to "reboot" more often...

how regularly do you reset the throttle/system? i find with any little kinks i have, from the amount of heat coming from the vents, to sluggish acceleration, to other funky engine sounds, a period throttle reset helps -- the next engine start afterwards, the engine kinda pauses for a second and then everything seems to sound/function normally...

advans

I reset my throttle every 2 weeks, its like a routine thing for me, so i doubt its the throttle reset.

SoCalC55

By throttle reset you mean the "transmission reset"? IE: turn it to the first position, hold the gas, turn off, release gas? If so i do that every other week as well.

Ryanr317

My car starting doing this a couple of weeks before the battery died.

Quicktwinturbo

1. Battery
2. Voltage regulator
3. Crankshaft pos sensor...


It's prolly one of those problem... Good luck ~!

advans

thanks for the updates guys, I reserved for Feb 17th! hope all goes well!

btw, I was at the dealer today, I briefly mentioned "yeah so (sales manager) my heated seat gets really hot, like so hot it burns my ***" he goes... "(chucks), oh man" lol what is that supposed to mean! hahahah

Jons95c36amg

I never did the throttle reset. Is it really necessary? The car moves like a **** though.

advans

try it! but not sure if it applies to your car!

c32used

I had the same situation where my lower seat heater was just too hot and eventually it stopped working well later I found out it was my seat heater module I say disconnect them both and see results if it fine then start by reconnecting the passenger side then if ok after a day then plug back in the drivers side if ok then my friend you have a new issue but your conditions appears as though your seat module/s are faulty.

Quicktwinturbo

Wher is the module?
thanks

c32used

Its right under the seat.

advans

theres no fault disconnecting it is there?

c32used

There are no faults that will appear that I have noticed.

advans

hmmm, i guess i'll do that tomorrow!