Radiator Cooling Fan runs constantly soon as engine started and goes to idle.

55

Asked by Aug 03, 2014 at 01:56 PM about the 2002 Mercedes-Benz SLK-Class SLK 320

Question type: Maintenance & Repair

Checked the Temperature Sending Unit by unpluging the TSU and no change! Also, removed TSU and checked visually which told me nothing. If the TSU was open, would I be seeing the same problem??

4 Answers

108,725

Is your ac on? If so they should be running all the time at idle.

2 out of 2 people think this is helpful.
Best Answer
55

No AC is OFF!

108,725

Check your fan relay. Sounds like the contacts might be stuck.

55

Don't think it has a relay! Direct input to Cooling Fan is from a Control Module.

Your Answer

Add photo

Related Questions

  • What could it be and how to repair brake pedal that sticks low before start up? 1 answer

    Brakes and brake pedal works fine after car warms up but before any start up the brake pedal sticks low when the car sits for a while.

    2006 Mercedes-Benz SLK-Class SLK 280

    -

    Maintenance & Repair

  • hesitation 1 answer

    At fast execeleration engine hesitates badly; this condition can also be duplicated with engine running at fast idle (4000rpm) in park. This problem was notice shortly after a battery cable became loo...

    1998 Mercedes-Benz SLK-Class SLK 230 Supercharged

    -

    Maintenance & Repair

  • 1999 230SLK engine starts cutting out at 4200 RPM, what would cause this? 2 answers

    1999 230 SLK, the engine idles at 762 RPM but when I rev the engine up, right about the 4200 RPM mark the engine starts to cut out, what could be causing this?

    1999 Mercedes-Benz SLK-Class

    -

    Maintenance & Repair

  • BAS/ESP intermittent issue. Vehicle loses acceleration 9 answers

    My 2001 Mercedes SLK320 is experiencing an intermittent BAS/ESP issue. When driving, the vehicle loses acceleration but not power, engine still runs and I can still brake. Turning the steering wheel...

    2001 Mercedes-Benz SLK-Class SLK 320

    -

    Maintenance & Repair

  • Cooling Fan Runs while car is off 2 answers

    Came home the other day and wife's 2010 C350 cooling fan was running.The car had been sitting idle for about 10 days.I started the car with no problem and the fan shut off when I turned the car off....

    2010 Mercedes-Benz C-Class

    -

    Maintenance & Repair

SLK-Class

Looking for a Used SLK-Class in your area?

CarGurus has 1,277 nationwide SLK-Class listings starting at $3,250.

ZIP:

Search Mercedes-Benz SLK-Class Questions

Mercedes-Benz SLK-Class Experts

#1 Richard Keeler
Richard Keeler
Reputation 340
#2 tedlew
tedlew
Reputation 240
#2 Michael Kane
Michael Kane
Reputation 240
View All

Related Models For Sale

Used Mercedes-Benz SL-Class
43 Great Deals out of 2,978 listings starting at $2,900
Used Mercedes-Benz CLK-Class
38 Great Deals out of 1,330 listings starting at $2,000
Used BMW Z4
35 Great Deals out of 1,197 listings starting at $4,988
Used Mercedes-Benz C-Class
476 Great Deals out of 28,694 listings starting at $1,499
Used Mercedes-Benz E-Class
376 Great Deals out of 21,751 listings starting at $699
Used Porsche Boxster
41 Great Deals out of 1,265 listings starting at $2,500
Used Chevrolet Corvette
95 Great Deals out of 20,202 listings starting at $3,495
Used BMW 3 Series
973 Great Deals out of 33,361 listings starting at $1,000
Used Mercedes-Benz S-Class
129 Great Deals out of 6,544 listings starting at $1,200
Used Porsche 911
88 Great Deals out of 4,532 listings starting at $11,992
Used Ford Mustang
364 Great Deals out of 46,830 listings starting at $1,999
Used Mazda MX-5 Miata
44 Great Deals out of 4,386 listings starting at $1,995

Used Cars For Sale

2016 Mercedes-Benz SLK-Class For Sale
71 listings starting at $30,388
2015 Mercedes-Benz SLK-Class For Sale
116 listings starting at $27,987
2014 Mercedes-Benz SLK-Class For Sale
6 Great Deals out of 227 listings starting at $24,588
2013 Mercedes-Benz SLK-Class For Sale
4 Great Deals out of 83 listings starting at $21,486
2012 Mercedes-Benz SLK-Class For Sale
4 Great Deals out of 46 listings starting at $20,900