Coolant Light will not go away. - Mercedes Benz SLK Forum

SLK R170 General Discussion SLK 200, SLK 230K, SLK 320, SLK32 AMG

 30Likes
Reply
 
LinkBack Thread Tools
#1 Old 3 Weeks Ago
Registered Users
 
ktarque2's Avatar
 
Join Date: Apr 2018
Location: Southern California, USA
Vehicle: 2001 SLK 320
Other Toys: 1997 Audi A4
Posts: 14
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
(Thread Starter)
Unhappy Coolant Light will not go away.

Hi, hope everybody is doing well.

I have a 2001 320 and for the past 2 months my coolant light will blink randomly every time I drive it. It started after my radiator cracked and was replaced with a new one, from that point on it will randomly blink at all times.

I have replaced the radiator, thermostat, coolant level sensor and coolant temperature sensor. All new but nothing has changed. The reservoir is full of coolant with zero signs of leaks.

She has 266k miles on her so she’s been around but drives great. I get two codes when I plug in my generic scanner, P0410 (which has been there since the day I bought it) and U0900.

Any input would be great.
LIL DON SLK likes this.
ktarque2 is offline  
The Following User Says Thank You to ktarque2 For This Useful Post:
Sponsored Links
Advertisement
 
#2 Old 3 Weeks Ago
Moderator/RoTMorganiser

 
Avel Du's Avatar
 
Join Date: Jul 2015
Location: Wirral, England
Vehicle: 2007 SLK55AMG
Other Toys: 2009 SLK 350 (Bluebadger), MK I Nissan Murano (2008), Honda VFR 800 FiW (1998), CB400four f2 (1978)
Posts: 22,251
Country:
Chats: 0
Mentioned: 248 Post(s)
Tagged: 0 Thread(s)
Quoted: 2195 Post(s)
Thanks: 1,903
Thanked 1,418 Times in 1,305 Posts
Garage
Daft as it sounds, I have a feeling it has something to do with the windscreen washer level.

These fine folk will know.

@Mn car guy
@efair
@stu32
@savcom
@Turdo2
@Padgett
@Australian
@Dave2302
jbanks15 likes this.

Myk
(Moderator/Ride of the Month Coordinator)


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Thanks go to those that post problems, solutions & feedback. It all helps.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Smartop : Cubby Holder : Cree fronts : Both rear fogs : Clock Insert : Quicksilver exhaust



Useful R170 diy:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Useful R171 diy:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Useful R172 diy:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Avel Du is offline  
#3 Old 3 Weeks Ago
Registered Users
 
Join Date: Oct 2013
Location: Minnesota
Vehicle: 2009 CLK 350 cab
Other Toys: Carver 350 Mariner, Boston Whaler Dauntless, 1961 Les Paul Formerly 2003 slk 230
Posts: 538
Country:
Chats: 0
Mentioned: 266 Post(s)
Tagged: 0 Thread(s)
Quoted: 129 Post(s)
Thanks: 3
Thanked 62 Times in 56 Posts
Quote:
Originally Posted by Avel Du View Post
Daft as it sounds, I have a feeling it has something to do with the windscreen washer level.

These fine folk will know.

@Mn car guy
@efair
@stu32
@savcom
@Turdo2
@Padgett
@Australian
@Dave2302
Avel is correct. For some bizarre reason, they use the same trouble light. Top off the washer fluid and report back.
jbanks15, M4rCu5, Avel Du and 1 others like this.
Mn car guy is offline  
 
#4 Old 3 Weeks Ago
Registered Users
 
ktarque2's Avatar
 
Join Date: Apr 2018
Location: Southern California, USA
Vehicle: 2001 SLK 320
Other Toys: 1997 Audi A4
Posts: 14
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
(Thread Starter)
Quote:
Originally Posted by Mn car guy View Post
Avel is correct. For some bizarre reason, they use the same trouble light. Top off the washer fluid and report back.
I’ve read about this however my windshield fluid reservoir is cracked/broken. Every time I attempt to add any fluid it leaks right through the reservoir. Makes it difficult since I cant actually see the reservoir.
LIL DON SLK likes this.
ktarque2 is offline  
#5 Old 3 Weeks Ago
Administrator/Founding Member

 
jbanks15's Avatar
 
Join Date: Jun 2006
Location: Valrico, Florida
Vehicle: 2009 SLK 55 AMG Kleemann Supercharger, ECU tune, Headers and LSD, CF Diffuser
Posts: 90,406
Country:
Chats: 38
Mentioned: 443 Post(s)
Tagged: 5 Thread(s)
Quoted: 6439 Post(s)
Thanks: 3,218
Thanked 10,962 Times in 8,327 Posts
replace it? just a suggestion
LIL DON SLK and Dave2302 like this.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Jeff, US Army Master Sergeant Retired
2009 SLK 55 AMG Black/Black
Kleemann Supercharger thread here:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Kleemann ECU Tune, headers and downpipes thread here:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Albums:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

ClearBra
OEM MB Plexiglass Draught Stop
Smarttop version 3.22
Previous - 02 SLK 320, 05 SLK 350
jbanks15 is online now  
#6 Old 3 Weeks Ago
Registered Users
 
ktarque2's Avatar
 
Join Date: Apr 2018
Location: Southern California, USA
Vehicle: 2001 SLK 320
Other Toys: 1997 Audi A4
Posts: 14
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
(Thread Starter)
You’re right that is the obvious solution, just didn’t know whether that would ultimately fix the light since no windshield wiper fluid has never been a problem for me before. I will look into doing so.
LIL DON SLK likes this.
ktarque2 is offline  
#7 Old 3 Weeks Ago
Premium Member
 
Australian's Avatar
 
Join Date: Sep 2012
Location: South Australia
Vehicle: SLK 320 2002
Other Toys: Just a shopping trolley.
Posts: 493
Country:
Chats: 0
Mentioned: 199 Post(s)
Tagged: 0 Thread(s)
Quoted: 76 Post(s)
Thanks: 8
Thanked 49 Times in 48 Posts
Quote:
Originally Posted by ktarque2 View Post
I’ve read about this however my windshield fluid reservoir is cracked/broken. Every time I attempt to add any fluid it leaks right through the reservoir. Makes it difficult since I cant actually see the reservoir.

When you say it's cracked/broken, have you seen it or are you assuming that because water goes all over the floor when you fill it up? If the latter, then bear in mind that the filler neck is not sealed where it goes into the bottle, so if the bottle's full, it just overflows.......all over the floor (another daft concept).
Avel Du and Dave2302 like this.
Australian is offline  
#8 Old 3 Weeks Ago
Registered Users
 
ktarque2's Avatar
 
Join Date: Apr 2018
Location: Southern California, USA
Vehicle: 2001 SLK 320
Other Toys: 1997 Audi A4
Posts: 14
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
(Thread Starter)
Quote:
Originally Posted by Australian View Post
When you say it's cracked/broken, have you seen it or are you assuming that because water goes all over the floor when you fill it up? If the latter, then bear in mind that the filler neck is not sealed where it goes into the bottle, so if the bottle's full, it just overflows.......all over the floor (another daft concept).
I’m just assuming, however I know the reservoir is empty and as soon as I put any fluid into it it will immediately leak onto the floor. It wont even give me the chance to get close to topping it off. I will take some time to remove the reservoir just to be 100% sure.
ktarque2 is offline  
#9 Old 3 Weeks Ago
Registered Users
 
Join Date: Oct 2013
Location: Minnesota
Vehicle: 2009 CLK 350 cab
Other Toys: Carver 350 Mariner, Boston Whaler Dauntless, 1961 Les Paul Formerly 2003 slk 230
Posts: 538
Country:
Chats: 0
Mentioned: 266 Post(s)
Tagged: 0 Thread(s)
Quoted: 129 Post(s)
Thanks: 3
Thanked 62 Times in 56 Posts
Mn car guy is offline  
#10 Old 3 Weeks Ago
Registered Users
 
M4rCu5's Avatar
 
Join Date: Jul 2014
Location: Melton Mowbray
Vehicle: 2001 SLK200K, 2001 SLK320
Posts: 950
Country:
Chats: 0
Mentioned: 52 Post(s)
Tagged: 0 Thread(s)
Quoted: 201 Post(s)
Thanks: 69
Thanked 94 Times in 90 Posts
Garage
Quote:
Originally Posted by Australian View Post
When you say it's cracked/broken, have you seen it or are you assuming that because water goes all over the floor when you fill it up? If the latter, then bear in mind that the filler neck is not sealed where it goes into the bottle, so if the bottle's full, it just overflows.......all over the floor (another daft concept).
There is a seal of sorts from neck to bottle and they usually fail.
- One of mine leaks and the other doesn't upon refilling - but this leak in itself still allows enough fluid into the tank to be way above the low fluid level. I'd suspect the pump seal or cracked tank.

https://www.slkworld.com/slk-r170-ge...tank-leak.html

https://www.pelicanparts.com/techart...eplacement.htm
Australian, Avel Du and Dave2302 like this.
M4rCu5 is online now  
The Following User Says Thank You to M4rCu5 For This Useful Post:
#11 Old 3 Weeks Ago
Registered Users
 
Join Date: Nov 2018
Location: NW Scotland
Vehicle: 2002 R170 SLK 320 V6
Other Toys: W220 V8 S Class, W203 CDI C Class, Peugeot Van 2.0 HDI, W220 V8 S Class Parts Donor Car
Posts: 599
Country:
Chats: 0
Mentioned: 83 Post(s)
Tagged: 0 Thread(s)
Quoted: 155 Post(s)
Thanks: 28
Thanked 54 Times in 46 Posts
Hi,

FWIW referring to the light on the dash, I noticed this morning that my 2002 V6 has a separate coolant light and washers light, made me think of this thread ......................

Having never run either system low I don't know if having Low Screenwash would put the Low Coolant light on or vice - versa, or even any combination of the aforementioned :grin

HTH, Cheers Dave
Dave2302 is offline  
#12 Old 3 Weeks Ago
Moderator/RoTMorganiser

 
Avel Du's Avatar
 
Join Date: Jul 2015
Location: Wirral, England
Vehicle: 2007 SLK55AMG
Other Toys: 2009 SLK 350 (Bluebadger), MK I Nissan Murano (2008), Honda VFR 800 FiW (1998), CB400four f2 (1978)
Posts: 22,251
Country:
Chats: 0
Mentioned: 248 Post(s)
Tagged: 0 Thread(s)
Quoted: 2195 Post(s)
Thanks: 1,903
Thanked 1,418 Times in 1,305 Posts
Garage
Quote:
Originally Posted by Dave2302 View Post
Hi,

FWIW referring to the light on the dash, I noticed this morning that my 2002 V6 has a separate coolant light and washers light, made me think of this thread ......................

Having never run either system low I don't know if having Low Screenwash would put the Low Coolant light on or vice - versa, or even any combination of the aforementioned :grin

HTH, Cheers Dave
I know it sounds loopy.
But so many members have reported back on this over my short time here.
There appears to be a link.

Another MB quirk.

Myk
(Moderator/Ride of the Month Coordinator)


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Thanks go to those that post problems, solutions & feedback. It all helps.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Smartop : Cubby Holder : Cree fronts : Both rear fogs : Clock Insert : Quicksilver exhaust



Useful R170 diy:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Useful R171 diy:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Useful R172 diy:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Avel Du is offline  
#13 Old 3 Weeks Ago
Registered Users
 
Join Date: Nov 2018
Location: NW Scotland
Vehicle: 2002 R170 SLK 320 V6
Other Toys: W220 V8 S Class, W203 CDI C Class, Peugeot Van 2.0 HDI, W220 V8 S Class Parts Donor Car
Posts: 599
Country:
Chats: 0
Mentioned: 83 Post(s)
Tagged: 0 Thread(s)
Quoted: 155 Post(s)
Thanks: 28
Thanked 54 Times in 46 Posts
Hi Myk, @Avel Du ,

Yes, agreed, stranger things happen on any MB on a daily basis ......................

I'm gonna put a 5 litre Screenwash in my Boot and run it out now

I'll test the Low Coolant Light when the V8 goes in later this year

Do you perhaps know, have we had this report for both Facey's and Pre Facey's or is it just confined to one of them ??

Just might be the affected Cars have had Dash Clusters replaced but not Version Coded correctly .com

You got me curiouser than my curious 2 new kittens now

Cheers Dave
Dave2302 is offline  
#14 Old 3 Weeks Ago
Moderator/RoTMorganiser

 
Avel Du's Avatar
 
Join Date: Jul 2015
Location: Wirral, England
Vehicle: 2007 SLK55AMG
Other Toys: 2009 SLK 350 (Bluebadger), MK I Nissan Murano (2008), Honda VFR 800 FiW (1998), CB400four f2 (1978)
Posts: 22,251
Country:
Chats: 0
Mentioned: 248 Post(s)
Tagged: 0 Thread(s)
Quoted: 2195 Post(s)
Thanks: 1,903
Thanked 1,418 Times in 1,305 Posts
Garage
I've never picked up on fl/pre fl.
My gut says both, but your comment has me wondering.

That could be the explanation that has been missing.
Dave2302 likes this.

Myk
(Moderator/Ride of the Month Coordinator)


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Thanks go to those that post problems, solutions & feedback. It all helps.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Smartop : Cubby Holder : Cree fronts : Both rear fogs : Clock Insert : Quicksilver exhaust



Useful R170 diy:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Useful R171 diy:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Useful R172 diy:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Avel Du is offline  
#15 Old 3 Weeks Ago
Moderator/RoTMorganiser

 
Avel Du's Avatar
 
Join Date: Jul 2015
Location: Wirral, England
Vehicle: 2007 SLK55AMG
Other Toys: 2009 SLK 350 (Bluebadger), MK I Nissan Murano (2008), Honda VFR 800 FiW (1998), CB400four f2 (1978)
Posts: 22,251
Country:
Chats: 0
Mentioned: 248 Post(s)
Tagged: 0 Thread(s)
Quoted: 2195 Post(s)
Thanks: 1,903
Thanked 1,418 Times in 1,305 Posts
Garage
Quote:
Originally Posted by Dave2302 View Post
Hi Myk, @Avel Du ,

Yes, agreed, stranger things happen on any MB on a daily basis ......................

I'm gonna put a 5 litre Screenwash in my Boot and run it out now

I'll test the Low Coolant Light when the V8 goes in later this year

Do you perhaps know, have we had this report for both Facey's and Pre Facey's or is it just confined to one of them ??

Just might be the affected Cars have had Dash Clusters replaced but not Version Coded correctly .com

You got me curiouser than my curious 2 new kittens now

Cheers Dave
Quote:
Originally Posted by Avel Du View Post
I've never picked up on fl/pre fl.
My gut says both, but your comment has me wondering.

That could be the explanation that has been missing.
In an effort to find out, we now have a poll:
https://www.slkworld.com/slk-r170-ge...ight-r170.html

Myk
(Moderator/Ride of the Month Coordinator)


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Thanks go to those that post problems, solutions & feedback. It all helps.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Smartop : Cubby Holder : Cree fronts : Both rear fogs : Clock Insert : Quicksilver exhaust



Useful R170 diy:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Useful R171 diy:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Useful R172 diy:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Avel Du is offline  
#16 Old 3 Weeks Ago
Premium Member
 
Australian's Avatar
 
Join Date: Sep 2012
Location: South Australia
Vehicle: SLK 320 2002
Other Toys: Just a shopping trolley.
Posts: 493
Country:
Chats: 0
Mentioned: 199 Post(s)
Tagged: 0 Thread(s)
Quoted: 76 Post(s)
Thanks: 8
Thanked 49 Times in 48 Posts
Yes, there are separate indicator lights for the windscreen washer level and the engine coolant level (at least in the post facelift). However, the sensors are connected in series. I can't remember how it works but I have read that if there's a fault with one sensor it can cause the other indicator light to come on.
M4rCu5, Avel Du and Dave2302 like this.
Australian is offline  
#17 Old 3 Weeks Ago
Registered Users
 
Join Date: Nov 2018
Location: NW Scotland
Vehicle: 2002 R170 SLK 320 V6
Other Toys: W220 V8 S Class, W203 CDI C Class, Peugeot Van 2.0 HDI, W220 V8 S Class Parts Donor Car
Posts: 599
Country:
Chats: 0
Mentioned: 83 Post(s)
Tagged: 0 Thread(s)
Quoted: 155 Post(s)
Thanks: 28
Thanked 54 Times in 46 Posts
Aha,

@Australian ,

Thanks for that, all is now clear and I can maybe explain it, so I can sleep at night ......................

Dave's Explanation, (might be incorrect tho, just an educated guess) :-

Sensors may be "resistance based" rather than a straight forward switch light on / off ......................

Wired in series, the Cluster Electronics see a resistance and light up the relevant bulb, but if one sensor fails, the wrong bulb lights, (either as a fail safe or simply a feedback that MB overlooked)

I'm happy for now, that'll do me until someone points out I'm "talking cock" .................... (as James May would say)

Cheers Dave
Avel Du likes this.
Dave2302 is offline  
#18 Old 3 Weeks Ago
Moderator/RoTMorganiser

 
Avel Du's Avatar
 
Join Date: Jul 2015
Location: Wirral, England
Vehicle: 2007 SLK55AMG
Other Toys: 2009 SLK 350 (Bluebadger), MK I Nissan Murano (2008), Honda VFR 800 FiW (1998), CB400four f2 (1978)
Posts: 22,251
Country:
Chats: 0
Mentioned: 248 Post(s)
Tagged: 0 Thread(s)
Quoted: 2195 Post(s)
Thanks: 1,903
Thanked 1,418 Times in 1,305 Posts
Garage
Does that mean I can kill the poll?

Sounds like it.

Myk
(Moderator/Ride of the Month Coordinator)


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Thanks go to those that post problems, solutions & feedback. It all helps.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Smartop : Cubby Holder : Cree fronts : Both rear fogs : Clock Insert : Quicksilver exhaust



Useful R170 diy:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Useful R171 diy:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Useful R172 diy:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Avel Du is offline  
#19 Old 3 Weeks Ago
Registered Users
 
Join Date: Nov 2018
Location: NW Scotland
Vehicle: 2002 R170 SLK 320 V6
Other Toys: W220 V8 S Class, W203 CDI C Class, Peugeot Van 2.0 HDI, W220 V8 S Class Parts Donor Car
Posts: 599
Country:
Chats: 0
Mentioned: 83 Post(s)
Tagged: 0 Thread(s)
Quoted: 155 Post(s)
Thanks: 28
Thanked 54 Times in 46 Posts
Hi,

I'd leave it as more data will confirm our theorys, I've added it to my reams of "check this out when bored list"

I spent 14 hours yesterday stripping, modifying and re roofing our Hot Tub Conservatory out in the sun, drank about 10 liters of sparkling water, got indoors about 10pm, dinner / film / bed ..................

Kitties woke me up about 5 am so I'm absolutely washed out today .................

Having a lazy day so far, will go and hoover the entire Conservatory with my Industrial Workshop Vac in a minute to get rid of all the debris, then Beer, Curry, Beer and Hot Tub on tonight's agenda

It is pouring down today, and not a leak from the roof in sight

Shame, it was a full Glass roof, lovely looking up at the Stars and regular "Northern Lights Show" but the bloody thing has leaked from the word go when we originally built it 12 years ago, and I just got fed up in the end

I had tried everything to cure it with varying successes / failures after the Conservatory Contractors / Company who were as much use as a chocolate whatnot, cowboys the lot of them !!

It's now 19mm Ply and Felted, seems to be the best up here due to the inordinate amount of water that falls outta the sky

Them rolls of roofing felt felt almost impossibly heavy on my shoulder climbing up the ladder the last few hours

Just a bit of flashing left to finish next bright dry day

Cheers for now, Dave
M4rCu5 and Avel Du like this.
Dave2302 is offline  
#20 Old 3 Weeks Ago
6007.us
 
Padgett's Avatar
 
Join Date: Mar 2017
Location: Orlando
Vehicle: '01 SLK320 Lazulithe Blue, '00 SLK230 Bahama Blue (needs interior parts)
Other Toys: Too many others. See web page.
Posts: 2,566
Country:
Chats: 0
Mentioned: 278 Post(s)
Tagged: 0 Thread(s)
Quoted: 564 Post(s)
Thanks: 0
Thanked 157 Times in 144 Posts
" inordinate amount of water that falls outta the sky" Try Florida: 55" of rain a year mostly in July-September. Fortunately puddles don't stand in sand.
Dave2302 likes this.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Padgett is offline  
Sponsored Links
Advertisement
 
Reply

  Lower Navigation
Go Back   Mercedes Benz SLK Forum > Mercedes Benz R170 SLK Class Cars > SLK R170 General Discussion

Bookmarks

Tags
320, coolant, light

Quick Reply
Message:
Options
Upload your files to MEGAUPLOAD
Upload your images to ImageShack

Register Now



In order to be able to post messages on the Mercedes Benz SLK Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 2 (1 members and 1 guests)
subwiz
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome
 

Clubs, Garage Plus vBulletin Plugins by Drive Thru Online, Inc.