[DillionDay]

My a/c kind of smells so I bought some Ozium spray to spray into the air inlet to freshen everything up but I can't find the air inlet. Can anybody point me in the right direction? Thanks in advance.

[snaketh]

It's under where your wipers live. You have to lift the hood, remove the rubber weather stripping, and then the plastic cowels to get to it. Don't some sprays instruct you to remove the pollen filer and spray in there? That's under the dash on passenger side, very easy.

You shouldn't be getting the smell though, if the AC performance starts to decline, then the problem could be the evaporator.

[3rdcoast228i]

May want to replace the cabin air filters also. They are included with maintenance if you are still under warranty.

[overcoil]

And run the heat on high with the car up to temp for a time. My 235 heater gets very hot -enough to maybe burn off any odor.

[Sportstick]

And, if not already doing so, leave the system in AUTO and don't try to fiddle manually other than temperature or occasional need for max AC or Defrost. The AUTO setting includes periodic operations to dry out the innards intended to prevent just such an occurrence of odor.

[omera60]

PuMA measure
Air conditioning: An unpleasant smell such as a musty odour
22/06/18

Complaint:
In the heating/air conditioning operation, an unpleasant odour (e.g. mouldy odour) can be noticed for a short time in the vehicle. This is particularly apparent immediately after the engine is started when the heating/air-conditioning system is switched on, or after the heating/air-conditioning system is switched off while the vehicle is in motion.

Cause
This fault is not caused by a defect in the vehicle's heating/air conditioning system.

Reimbursement under the warranty is therefore not justified as there is no technical defect.

The odour development can be attributed to environmental conditions or the customer's behaviour in the vehicle (e.g. smokers, dogs in the vehicle, rubber floor mats, etc.) during the operating period of the heating/air conditioning system.
Even regular driving with air conditioning off or deactivated shortly before the end of the journey can
cause the problem.

Basic information:
Over a relatively long operating period, the heating/air-conditioning system creates the condition for a favourable habitat for bacteria and other micro-organisms due to air humidity being continually condensed at the evaporator.
Together with dirt that is introduced via fresh air or even circulated air, this may lead to microbial contamination of the evaporator and, as a result, may lead to a mouldy odour, for example.

Changing the microfilter regularly can reduce the intake of contaminants
and delay or prevent the occurrence of the aforementioned problem.

Exchanging the evaporator does not resolve the problem in the long term, as microbial
contamination can build up again.


Motor vehicles affected:
All series with a air conditioning (IHKR) or IHKA (IHKA)
Measure
++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++++++++++++++++++++
Change in version 06:
Part numbers for F25 and F26 added.
++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++++++++++++++++++++

Changing the microfilter regularly can reduce the intake of dirt and delay or prevent the occurrence of the aforementioned problem.

Replacing the evaporator does not resolve the problem permanently, as microbial contamination can build up again.
-------------------------------------------

Cleaning with spray lance:
The most efficient and long-lasting method for eliminating the mouldy odour in the heating/air conditioning system is to clean the evaporator using a spray lance. With this procedure, the air conditioning cleaner is used to spray a disinfectant directly onto the evaporator at high pressure, thereby rinsing the residue from the evaporator.

The air conditioning cleaner is used undiluted. It is not necessary to rinse.

Description of the operations:
For the following series the detailed description of the work process of the respective REP should be taken:
64 51 001 "Clean evaporator"
----------------------------

Required tools:

The spray lances and the spray pistol can be purchased via the "Special Tools"
online catalogue in the BMW aftersales portal (ASAP).
The air conditioning cleaner can be ordered directly via BMW Group Parts (Electronic Parts Catalogue).

Spray lance part number:
- E39/E46/E53/E83 = 64 1 450
- E65/E66/E67 (left-hand drive vehicle) = 64 1 280
- E65/E66/E67 (right-hand drive vehicle) = 64 1 290
- E60/E61/E63/E64 = 64 1 480
- E85/E86 (left-hand drive vehicle) = 64 1 490
- E85/E86 (right-hand drive vehicle) = 64 1 250
- E81/E82/E87/E88/E90/E91/E92/E93 (left-hand drive vehicle) = 64 1 260
- E81/E82/E87/E88/E90/E91/E92/E93 (right-hand drive vehicle) = 64 1 270
- E70/E71/E72/F15/F16 (left and right-hand drive vehicle) = 64 1 300
- F01/F02/F03/F04/F06/F07/F10/F11/F12/F13/F18/G01/G02 (left-hand drive vehicle)
= 83 30 2 222 502
- F01/F02/F03/F04/F06/F07/F10/F11/F12/F13/F18/G01/G02 (right-hand drive vehicle)
= 83 30 2 364 733
- F20/F21/F22/F23/F25/F26/F30/F31/F32/F33/F34/F35/F36/F80/F82/F83 (left-hand drive vehicle)
= 83 30 2 344 001
- F20/F21/F22/F23/F25/F26/F30/F31/F32/F33/F34/F35/F36/F80/F82/F83 (right-hand drive vehicle)
= 83 30 2 289 613
- I01= 83 30 2 413 653
- G11/G12/G30/G31/G32 (left-hand drive vehicle)= 83 30 2 411 757
- G11/G12/G30/G31/G32 (right-hand drive vehicle)= 83 30 2 414 999


Spray pistol part number = 81 45 9 429 217
Air conditioning cleaner part number = 83 19 2 180 507
(only for cleaning with spray lance!)


---------------------------------------------------
---------------------------------------------------

Further information:
- Service Information Technology "musty odour caused by heating system / air conditioning" 64 08 00 (645)
- Short information no. 97 (from August 2009) = "Air conditioning disinfection"
- Product information no. 60 (from April 2010) = "Ultrasonic air conditioning cleaning"
- With F4x, F5x, F39 and F60 vehicles, please observe PuMA measure

[DillionDay]

Thanks for the information guys!!!

[M2OAK]

Originally Posted by snaketh

It's under where your wipers live. You have to lift the hood, remove the rubber weather stripping, and then the plastic cowels to get to it. Don't some sprays instruct you to remove the pollen filer and spray in there? That's under the dash on passenger side, very easy.

You shouldn't be getting the smell though, if the AC performance starts to decline, then the problem could be the evaporator.

Hey mate, I have the same problem and for the life of me I cannot find the aircon intake in the engine bay. Could you please explain in a bit more detail or provide a photo? Would be a life saver! Cannot find this info anywhere online!

[John in VA]

Originally Posted by M2OAK

Hey mate, I have the same problem and for the life of me I cannot find the aircon intake in the engine bay. Could you please explain in a bit more detail or provide a photo? Would be a life saver! Cannot find this info anywhere online!

Remove the wiper arms & the black plastic cowl cover that runs from left to right under the wipers. You can spray in there once the cover is removed, or try the cabin air filter recess.

https://f87.bimmerpost.com/forums/sh....php?t=1914029

https://www.youtube.com/watch?v=O4s0...heHunterHofman