2004 C230 Intermittent Check Coolant/Wiper Fluid and Limp Mode
Thread Starter
Super Member
Joined: Aug 2004
Posts: 791
Likes: 37
From: Detroit Area
W203 C230, W210 E350, W166 ML63
2004 C230 Intermittent Check Coolant/Wiper Fluid and Limp Mode
The last 2 weeks I have been getting a random display on my dash of check windshield washer fluid that would go away and then come back. I am pretty sure I have fluid in there because I just had my car serviced 6,000 miles ago and I barely use wiper fluid.
Then after a few days I started getting a check coolant. I read up on the faults through the forums and it says that the wiper fluid and coolant are sometimes on the same circuit so when one sensor trips it trips the other. I went ahead and purchased the coolant sensor and I am waiting for it come in.
However today my car has been going into a weird limp mode where it is not accelerating properly. The supercharger whines loudly through the acceleration but the car simply does not go. I was thinking it may be a vacuum leak of some kind but the thing is that it goes away once I turn off and start my car back up. Has anyone had this happen to them?
I am thinking that it may actually be the coolant being low and the car is going into limp mode to not damage the engine, but I am not sure. I would check the coolant but this just happened and my car is still hot so I do not want to open the reservoir.
Any input?
Then after a few days I started getting a check coolant. I read up on the faults through the forums and it says that the wiper fluid and coolant are sometimes on the same circuit so when one sensor trips it trips the other. I went ahead and purchased the coolant sensor and I am waiting for it come in.
However today my car has been going into a weird limp mode where it is not accelerating properly. The supercharger whines loudly through the acceleration but the car simply does not go. I was thinking it may be a vacuum leak of some kind but the thing is that it goes away once I turn off and start my car back up. Has anyone had this happen to them?
I am thinking that it may actually be the coolant being low and the car is going into limp mode to not damage the engine, but I am not sure. I would check the coolant but this just happened and my car is still hot so I do not want to open the reservoir.
Any input?
Member
Joined: Sep 2014
Posts: 85
Likes: 5
Mercedes C32
hi
Sounds like you just have some bad contact or the fuse box has water inside it.
open the fuse and check for water first(use a flash light)
please get some electrical board cleaner first. remove fuse 54 (controls the fans, coolant sensor, water level sensor)in the from fuse box. (situated on the right side against the firewall under two plastic pieces...)
Spray electrical cleaner into the contacts and the top of the fuse box. ( the spray drys very quickly and doesnt leave a residue generally and removes corrosion)
Do the basics first before starting to swap out expensive parts.
Sounds like you just have some bad contact or the fuse box has water inside it.
open the fuse and check for water first(use a flash light)
please get some electrical board cleaner first. remove fuse 54 (controls the fans, coolant sensor, water level sensor)in the from fuse box. (situated on the right side against the firewall under two plastic pieces...)
Spray electrical cleaner into the contacts and the top of the fuse box. ( the spray drys very quickly and doesnt leave a residue generally and removes corrosion)
Do the basics first before starting to swap out expensive parts.
Thread Starter
Super Member
Joined: Aug 2004
Posts: 791
Likes: 37
From: Detroit Area
W203 C230, W210 E350, W166 ML63
hi
Sounds like you just have some bad contact or the fuse box has water inside it.
open the fuse and check for water first(use a flash light)
please get some electrical board cleaner first. remove fuse 54 (controls the fans, coolant sensor, water level sensor)in the from fuse box. (situated on the right side against the firewall under two plastic pieces...)
Spray electrical cleaner into the contacts and the top of the fuse box. ( the spray drys very quickly and doesnt leave a residue generally and removes corrosion)
Do the basics first before starting to swap out expensive parts.
Sounds like you just have some bad contact or the fuse box has water inside it.
open the fuse and check for water first(use a flash light)
please get some electrical board cleaner first. remove fuse 54 (controls the fans, coolant sensor, water level sensor)in the from fuse box. (situated on the right side against the firewall under two plastic pieces...)
Spray electrical cleaner into the contacts and the top of the fuse box. ( the spray drys very quickly and doesnt leave a residue generally and removes corrosion)
Do the basics first before starting to swap out expensive parts.
Member
Joined: Jun 2015
Posts: 96
Likes: 1
From: Wisconsin
2004 C230 Kompressor Sport
I've heard of a bad transmission conductor plate causing the car to go into limp mode. When you shut the car off and then restart it, it resets... I hope that isn't the case for you as it's around $1500 or so just to replace the transmission conductor plate - and some vehicles required the entire valve body depending on the year. Keep us updated please.
