JDenhamCLK320

What gives ?? Notice it lately when the heat started to roll around when I first turn on the ac smells like sweaty water ?? Any spray I can use to run it thru the ac recirculation system ?? I used to spray some stuff in my silverado and it was located in the glove box

Kevwood

You got a little mildew and mold going on there. Go to pretty much any auto parts store and you can buy a can of a/c refresher, you put it on the floor of the back seat and click it open with the a/c on full and in recirculate mode, close the doors and leave it for 5 minutes or so. Then get in and do a quick air out. It works fantastic and saves a trip to the dealer for the service.

Glyn M Ruck

You have a bacterial infection of the evaporator. Make sure that the HVAC housing drain is not blocked. The dealer can provide you with a spray to kill it off. New evaporators are now microencapsulated with anti-bacteriacide. You need to drill & plug the housing to access the evaporator properly.

After using A/C try & blow hot air for the last few miles of driving to dry out the housing. Always leave the fan running even if only at low speed.

Glyn M Ruck

Here is the DTB

https://mbworld.org/forums/attachmen...y-a_c-odor.pdf

JDenhamCLK320

I notice the other day black air ducts underneath the driver and passengers seats ?? Is that for the a/c inducts ??

Kevwood

Those are the rear floor vents.

JDenhamCLK320

So the inducts are located underneath the passengers feet area ??

JDenhamCLK320

Checked the shelves at my work and we sell a spray too kill airborne bacteria. New car smell I'm guessing. Should work ?

Glyn M Ruck

You can only try. You need quite potent stuff.

Kevwood

This is the exact stuff I use in the wife's C class, works fantastic;

http://www.supercheapauto.co.nz/onli...09#Description

Glyn M Ruck

Yep! - That's a nice broad spectrum product. You need to be sure to kill everything otherwise just one live spore will multiply very quickly in the warm damp conditions.

Louie D

I just read this is this the service that would take care of his proplem ?

Clean Air Ventilation System Cleaning Service
Mercedes-Benz has developed a process using their approved A/C evaporator core cleaner that will improve ventilation system air quality. Your Mercedes-Benz Certified Technician applies odorless foam to effectively clean and disinfect every component in the A/C evaporator chamber removing contaminants and odors. Benefits from this service include: Cleaner air inside the cabin. Foul odors removed from the vent system. Maximized cold air. Maximized air volume. More comfortable driving experience.


Introductory Special - $117.00 **

JDenhamCLK320

$117 service ain't bad. May have to take it in to the dealer :-/

Kevwood

That's a great price, sure don't get offers like that over here!

nauticalx

I recently had a dealer claim this isn't a warranty covered issue. This is pretty disturbing to hear as it appears to be a pretty common problem. I had hoped they'd do the right thing and fix my issue.

Has anyone had this issue and complained of it within warranty? If so, please PM me. We need to look into our alternatives here. Thanks

Rudeney

This is a common problem on all cars. It's not really a defect, just a "fact of life". It would be like asking the dealer to clean mud off of your tires and fender liners because you drive on dirt roads. My advice is to use the RECIRC mode sparingly. You can also try cleaning this yourself by spraying Lysol into the intake - remove the pollen filter above the vehicle battery to see the intake fan.