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

10,125

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
    850
  • #2
    Michael Kane
    Reputation
    580
  • #3
    marydudley47
    Reputation
    480
View All

Related Models For Sale

Used Mercedes-Benz E-Class
392 Great Deals out of 19,491 listings starting at $1,913
Used BMW 7 Series
111 Great Deals out of 4,667 listings starting at $1,599
Used Mercedes-Benz CLS-Class
68 Great Deals out of 1,965 listings starting at $5,495
Used Mercedes-Benz C-Class
645 Great Deals out of 25,492 listings starting at $1,100
Used Mercedes-Benz SL-Class
63 Great Deals out of 2,900 listings starting at $4,930
Used Land Rover Range Rover
101 Great Deals out of 4,714 listings starting at $3,995
Used BMW 5 Series
393 Great Deals out of 16,848 listings starting at $1,653
Used Mercedes-Benz CL-Class
22 Great Deals out of 493 listings starting at $4,999
Used Mercedes-Benz G-Class
10 Great Deals out of 1,717 listings starting at $26,950
Used BMW 6 Series
81 Great Deals out of 2,594 listings starting at $6,987
Used Cadillac Escalade
247 Great Deals out of 12,172 listings starting at $2,999

Used Cars For Sale

2018 Mercedes-Benz S-Class For Sale
3 Great Deals out of 2,144 listings starting at $84,000
2017 Mercedes-Benz S-Class For Sale
4 Great Deals out of 178 listings starting at $60,591
2016 Mercedes-Benz S-Class For Sale
11 Great Deals out of 251 listings starting at $40,995
2015 Mercedes-Benz S-Class For Sale
54 Great Deals out of 1,002 listings starting at $38,980
2014 Mercedes-Benz S-Class For Sale
6 Great Deals out of 272 listings starting at $33,275

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.