Blower won't cut off after I took the key out

Asked by Dec 03, 2013 at 06:27 PM about the 2006 Mercedes-Benz R-Class R 350 4MATIC

Question type: Maintenance & Repair

Fan blower stays on when car is off

4 Answers

okay Mercedes is Difficult to get to the right answer with, but am going to have to say a relay...or and undervoltage condition created by a battery that's older than five...and a corroded connection at the MAIN ground...follow the black battery cable to where it attaches to the frame...wirebrush 'till shiny...that lug and that territory that it bolts to~ with refreshed ground the relays should start working again normally....actually tried to "peg" this part...and even (my dependable source what has EVERYTHING for near every model...can find out if this part exists in reality or just one of my gearhead fantasies....but here's a relay...honestly do not think that we will need it once fresh grounding to the chassis/engine is established.....also there's a 1/0 battery cable leading to the engine block (near the alternator) disassemble and give this connection a scrub for good measure as well....this connection is so the fuel injectors and engine startermotor can see proper grounding tooo~

3 of 3 people found this helpful.


1 of 1 people found this helpful.

you know I only imagined that this part MUST exist...trackin' it down was not easy...actually had to take a picture of the screen so that you'd believe me....relays....if they have enough juice normally do okay...except where a shorted load is concerned...then simply pluck the relays and give them a sniff....if burnt, that's the one to change out~

2 of 2 people found this helpful.

As a side note to judge_roy comment, does your A/C system have a button labeled "REST". ? On the 07 SL's if this button is pushed, it turns on the fan motor after the engine has been turned off. The purpose is to provide residual heat or ventilation to the interior for up to 30 minutes. Seems like a dumb option (especially in Florida).

2 of 2 people found this helpful.

Your Answer

Add photo

Related Questions


Looking for a Used R-Class in your area?

CarGurus has 544 nationwide R-Class listings starting at $3,500.


Search Mercedes-Benz R-Class Questions

Mercedes-Benz R-Class Experts

#1 GDI1952
Reputation 470
#2 anjy834u
Reputation 390
#3 tenspeed
Reputation 270
View All

Related Models For Sale

Used Mercedes-Benz GL-Class
183 Great Deals out of 3,758 listings starting at $7,499
Used Mercedes-Benz E-Class
430 Great Deals out of 19,554 listings starting at $1,200
Used Mercedes-Benz S-Class
161 Great Deals out of 6,359 listings starting at $2,990
Used Mercedes-Benz M-Class
204 Great Deals out of 5,663 listings starting at $1,500
Used Mercedes-Benz C-Class
605 Great Deals out of 24,921 listings starting at $1,995
Used Audi Q7
96 Great Deals out of 4,567 listings starting at $4,700
Used BMW X5
474 Great Deals out of 14,977 listings starting at $1,499
Used BMW 5 Series
489 Great Deals out of 16,551 listings starting at $2,000
Used BMW 7 Series
159 Great Deals out of 6,148 listings starting at $1,990
Used Mercedes-Benz CLS-Class
77 Great Deals out of 2,094 listings starting at $6,995
53 Great Deals out of 1,338 listings starting at $3,495
Used Mercedes-Benz G-Class
17 Great Deals out of 1,284 listings starting at $19,995
Used Land Rover Range Rover
114 Great Deals out of 4,820 listings starting at $2,500
Used Acura MDX
303 Great Deals out of 17,787 listings starting at $1,900

Used Cars For Sale

2011 Mercedes-Benz R-Class R 350 4MATIC For Sale
38 listings starting at $14,941
2008 Mercedes-Benz R-Class R 350 4MATIC For Sale
3 Great Deals out of 86 listings starting at $6,000

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.