A/C Noise under glove box

[srfrdrew]

Random startup noise when turning on a/c

It goes away after a few seconds but strange sounds

Sounds like leaves rattling in the glove box?

Blower motor or could it be actual leaves

Have not opened up lower cover under glovebox where in cabin filter and blower motor live yet

[hahnmgh63]

Pretty easy to get at the Cabin Filter under the glovebox.  If you or a dealer hasn't replaced that recently I would definitely start there. Also have a Shop Vac handy in case there is some debris in there.

[srfrdrew]

Hi hahnmgh63,

 

Thanks for the advice.. Yes, I've been under there several times to replace the cabin filter...

 

Just starting to hear a really strange noise when starting up the car after sitting for a while and putting on the A/C

 

I pull the filter and inspect,  if no leaves fall out assume blower motor?

 

Should I proactively replace if the blower motor is the cause (even though system still working) or wait till it goes DOA?

 

On a side note... I'm not getting much air flow though the top vent on the top of dashboard ( the big oval shaped black grate) not sure if that is related to blower motor

[Doohan]

http://www.carparts.com/details/Porsche/Cayenne/Replacement/Blower_Motor/2004/REPP192001.html?TID=80000000CP&origin=pla&CP=1&CP_SRC=PPC&003=27372932&010=cpreblmo04porschecayenne20032006replacementrepp1920011044282&c_aid=45515568573&c2cid=48aac40a-8d0b-4ba3-aafc-89f82ef393ba&gclid=CjwKEAjwkf-gBRCd-b2m2aOo0EQSJABMeQDkcbjfKMSeL8lTLXcj_8JX52Y6InseCubU6hUOlXiEcxoC-dLw_wcB

[wrinkledpants]

Hi hahnmgh63,

 

Thanks for the advice.. Yes, I've been under there several times to replace the cabin filter...

 

Just starting to hear a really strange noise when starting up the car after sitting for a while and putting on the A/C

 

I pull the filter and inspect,  if no leaves fall out assume blower motor?

 

Should I proactively replace if the blower motor is the cause (even though system still working) or wait till it goes DOA?

 

On a side note... I'm not getting much air flow though the top vent on the top of dashboard ( the big oval shaped black grate) not sure if that is related to blower motor

 

It's probably leaves or it's a squeaky bearing on the blower motor.  Pull the filter and check around in there with a light and mirror to make sure you don't have any leaves stuck somewhere.  It's possible to get some leaves sucked in and stuck up against the filter as that *is* what's it's for.

 

Not much air is supposed to come out of the center grate.  That thing is called indirect air and it shouldn't be putting out much air.  You should be able to put your hand on it and it should feel warm, but that's about it (or cold if the AC is on).

[srfrdrew]

Thanks for the further info wrinkledpants