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

8,335

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

Add photo

Related Questions

Search Mercedes-Benz S-Class Questions

Mercedes-Benz S-Class Experts

#1 Tom Demyan
Tom Demyan
Reputation 720
#2 Michael Kane
Michael Kane
Reputation 520
#3 lightGear
lightGear
Reputation 410
View All

Related Models For Sale

Used Mercedes-Benz E-Class
550 Great Deals out of 23,233 listings starting at $1,450
Used BMW 7 Series
165 Great Deals out of 5,952 listings starting at $3,400
Used Mercedes-Benz CLS-Class
71 Great Deals out of 2,274 listings starting at $5,999
Used Mercedes-Benz C-Class
845 Great Deals out of 32,180 listings starting at $1,200
Used Mercedes-Benz SL-Class
82 Great Deals out of 3,306 listings starting at $2,988
Used Audi A8
52 Great Deals out of 1,809 listings starting at $2,000
Used Mercedes-Benz CL-Class
31 Great Deals out of 632 listings starting at $3,295
Used Land Rover Range Rover
100 Great Deals out of 4,864 listings starting at $5,000
Used BMW 5 Series
594 Great Deals out of 14,897 listings starting at $1,000
Used BMW 6 Series
93 Great Deals out of 3,248 listings starting at $4,895
Used Mercedes-Benz G-Class
9 Great Deals out of 969 listings starting at $22,500

Used Cars For Sale

2017 Mercedes-Benz S-Class For Sale
1,353 listings starting at $97,675
2016 Mercedes-Benz S-Class For Sale
9 Great Deals out of 221 listings starting at $70,977
2015 Mercedes-Benz S-Class For Sale
35 Great Deals out of 592 listings starting at $44,762
2014 Mercedes-Benz S-Class For Sale
22 Great Deals out of 558 listings starting at $43,995
2013 Mercedes-Benz S-Class For Sale
22 Great Deals out of 277 listings starting at $27,995