CLK-Class (W209) 2003 on: CLK 270 CDI, CLK 200K, CLK 200 CGI, CLK 240, CLK 320, CLK 350, CLK 500, CLK 550 [Coupes & Cabriolets]

Overheating?

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Nov 2, 2019 | 02:31 AM
  #1  
Stevie Palmer's Avatar
Thread Starter
Junior Member
5 Year Member
 
Joined: Mar 2019
Posts: 39
Likes: 2
From: Los Angeles
Clk 500 convertible
Overheating?

Should the radiator fan turn freely when cold? I just knocked it when I was working on something else and noted it spun easily several times. I was under the impression they are locked by a clutch. Is it faulty? It does run hot I noticed could it be old coolant, bad thermostat, faulty fan or do these cars run hot? Not sure if the exact temp on last run but it was one bar over 80 and felt pretty hot on the hood.

Thanks in advance
Reply
Old Nov 3, 2019 | 12:01 AM
  #2  
Rudeney's Avatar
MBworld Guru
 
Joined: Dec 2009
Posts: 10,782
Likes: 1,011
NO LONGER ACTIVE
The fan is electrically operated and controlled by the ECU. It will only run when needed.
Reply
Old Nov 3, 2019 | 12:10 AM
  #3  
Stevie Palmer's Avatar
Thread Starter
Junior Member
5 Year Member
 
Joined: Mar 2019
Posts: 39
Likes: 2
From: Los Angeles
Clk 500 convertible
Ok thanks Rudeney.

Just changed the control arms following your write up ages ago. All went well. Seems all good so far.

Had to replace the fuel pump too and that was considerably easier than expected.

Onto the next...

Possible washer pump died, although it had dropped full and think I may have stretched a wire or connection somewhere.
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 11:00 AM.

story-0
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-1
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-2
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-3
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-4
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-5
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-6
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-7
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-8
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-9
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE