Strange smell (rear)

[icic]

My air con/heating is smelling, the smell remains for a few hours after I stop the engine, but is gone by the next day, until the engine is started again. It happens whether the heating is on or aircon is on or off or even when all the heating air con is set to off (switched off completely)

Its a strange smell its not the normal bad aircon smell, I think though it some bacterial issue

I has got worse over the last couple of months. It used to only happen when the back vents were on but now it happens even with the back vents switched off

I have done a air con bomb, made no difference at all.

I believe the rear vents are on a different compressor ? if so how do you clean that system ? I also think it might be in the vents at the back wondering how to revive them so I can spray some enzymes in there

On that note would ValetPro enzymes work sprayed into the vents, in which case where are the intake vents for the back compressor ?

Any advice would be great on how to best sort the smell.

 

[WelshGas]

My air con/heating is smelling, the smell remains for a few hours after I stop the engine, but is gone by the next day, until the engine is started again. It happens whether the heating is on or aircon is on or off or even when all the heating air con is set to off (switched off completely)

Its a strange smell its not the normal bad aircon smell, I think though it some bacterial issue

I has got worse over the last couple of months. It used to only happen when the back vents were on but now it happens even with the back vents switched off

I have done a air con bomb, made no difference at all.

I believe the rear vents are on a different compressor ? if so how do you clean that system ? I also think it might be in the vents at the back wondering how to revive them so I can spray some enzymes in there

On that note would ValetPro enzymes work sprayed into the vents, in which case where are the intake vents for the back compressor ?

Any advice would be great on how to best sort the smell.

Air intake for the rear heating unit are in the boot, on Right side at rear.

 

[icic]

So behind the back seat, whats the vent below the back seat infant of the wheel arch .. is that it ?

Another question if the back unit is switched offaly air circulate through it?

 

[WelshGas]

So behind the back seat, whats the vent below the back seat infant of the wheel arch .. is that it ?

Another question if the back unit is switched offaly air circulate through it?

Yes. That's the inlet.

No idea. Haven't switched mine off in 10yrs.

 

[TripleBee]

It's not an overcooking battery?
Does it smell like rotten eggs/sulphur?

 

[icic]

so it seems the smell is less when the air con is on in the summer, so no engine heat air? so in other words if the heating is on it is worse. would this make sense, does anyone have a diagram or explain how the heat from engine in winter works as opposed to cool air intake of the air con. to to clarify air con is always on and however the smell happens though without air con as well, it just seems more heat related, any thoughts

 

[TripleBee]

so it seems the smell is less when the air con is on in the summer, so no engine heat air? so in other words if the heating is on it is worse. would this make sense, does anyone have a diagram or explain how the heat from engine in winter works as opposed to cool air intake of the air con. to to clarify air con is always on and however the smell happens though without air con as well, it just seems more heat related, any thoughts

What smells more: a cold beer, or a warm beer?
A warm beer will smell more. Something cold will never smell as much/heavy than something warm.
So it can be that the smell is always there, but you feel like it smells more when it's warm.

 

[secret lemonade drinker]

I get a "glycol" coollant smell when I run the rear heater on warm, on cold it is just a fan circulating air, there will be no warm coolant circulating