loud fan or refridgerator noise from front vent on 2004 mercdes s430

Asked by Oct 01, 2013 at 01:37 PM about the 2004 Mercedes-Benz S-Class S 430 4MATIC

Question type: Maintenance & Repair

all working great but a loud sound (sounds like a fan or fridge running) coming from the fron vent. on a hot day it comes on after about 5 minutes but on a cool day it comes on about 30 minutes into driving. it does not shut off (shutting off auto climate control does not work). Only turning off the engine and taking out the key will stop the noise.....any guidance appreciated

1 Answer

9,345

On my SL - sometimes it sounds like a jet engine. The sound is coming from the engine compartment. Local MB dealer says all is okay. Whatever sensor that controls fan speed is supposedly functioning correctly.

Your Answer

Mercedes-Benz S-Class Experts

  • #1
    Tom Demyan
    Reputation
    790
  • #2
    Michael Kane
    Reputation
    570
  • #3
    marydudley47
    Reputation
    480
View All

Related Models For Sale

Used Mercedes-Benz E-Class
713 Great Deals out of 22,801 listings starting at $1,450
Used BMW 7 Series
129 Great Deals out of 5,119 listings starting at $1,750
Used Mercedes-Benz CLS-Class
84 Great Deals out of 2,343 listings starting at $3,500
Used Mercedes-Benz C-Class
906 Great Deals out of 28,407 listings starting at $2,001
Used Mercedes-Benz CL-Class
16 Great Deals out of 518 listings starting at $5,500
Used Mercedes-Benz SL-Class
66 Great Deals out of 3,528 listings starting at $4,500
Used Land Rover Range Rover
66 Great Deals out of 4,304 listings starting at $3,500
Used Mercedes-Benz G-Class
9 Great Deals out of 898 listings starting at $19,980
Used Audi A8
65 Great Deals out of 1,780 listings starting at $4,300
Used BMW 6 Series
72 Great Deals out of 2,445 listings starting at $5,995
Used Cadillac Escalade
260 Great Deals out of 11,936 listings starting at $1,200

Used Cars For Sale

2018 Mercedes-Benz S-Class For Sale
2,731 listings starting at $90,895
2017 Mercedes-Benz S-Class For Sale
4 Great Deals out of 477 listings starting at $75,979
2016 Mercedes-Benz S-Class For Sale
5 Great Deals out of 198 listings starting at $59,855
2015 Mercedes-Benz S-Class For Sale
54 Great Deals out of 1,134 listings starting at $39,900
2014 Mercedes-Benz S-Class For Sale
11 Great Deals out of 401 listings starting at $38,496

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.