The fan doesn't turn on when in traffic and the engine overheats but sometimes later it turn to life... can anyone help me?

Asked by GuruDHF3H Aug 31, 2017 at 04:39 PM about the 2007 Mercedes-Benz C-Class

Question type: Maintenance & Repair

I have a C320cdi W204 (2007) and I've made a trip last
week and when I was arrested on traffic I notice a message
on the dash board that says "check coolant level" and the
temperature raising, and I waited for the fan becomes to
function but when it reached the 120° C, I was forced to
shut down immediately so I don't burn down the engine.

When I finally arrived to the gas station I went to  the engine
compartment and I notice that the fan was working...

Later this situation repeats and I notice the same message
appears on the dash board... what I think it happens is that
every time the message appears on the dash board the fan
does not receive any signal to start working...

Can anyone help me out please?

2 Answers
3,295

John answered 7 years ago

Start with coolant level and mixture. Is it correct when engine cold? Fix that first. If correct and problem reoccurs, look to the coolant temp sensor There should be a code for this to confirm.

1 people found this helpful.
Mark helpful
2,625

MDClancy answered 7 years ago

Another thing it could be is that the temperature sensor is misreading. I took my Mazda to my mechanic when it was overheating and he did all the tests my fans worked just fine, my coolant was not leaking and was mixed properly, but when he tested my temperature sensor it was reading 30-40 degrees above what the actual temperature was. After he replaced the sensor my car has worked just fine.

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

Shortcuts

Search Mercedes-Benz C-Class Questions

CarGurus Experts

  • #1
    Lorne Grandison
    Reputation
    12,510
  • #2
    zabi
    Reputation
    5,610
  • #3
    PPC123
    Reputation
    5,150
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Mercedes-Benz E-Class
30 Great Deals out of 496 listings starting at $5,700
Used BMW 3 Series
71 Great Deals out of 1,176 listings starting at $1,995
Used Mercedes-Benz S-Class
15 Great Deals out of 227 listings starting at $8,977
Used BMW M3
8 Great Deals out of 90 listings starting at $15,995
Used BMW 5 Series
19 Great Deals out of 321 listings starting at $4,500
Used Mercedes-Benz CLS
7 Great Deals out of 86 listings starting at $8,000
Used Dodge Charger
38 Great Deals out of 645 listings starting at $4,888
Used Lexus IS
25 Great Deals out of 311 listings starting at $5,900
Used Chevrolet Corvette
29 Great Deals out of 1,060 listings starting at $15,871

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.