Heater/Blower issues

[Ndx]

Hi Guys,

Having intermittent issues with my heater/blower on Cayenne
it will blow for minute then it stops ( adjusting speed does nothing )

It blows longer if only one side is on driver and passenger off.

Is that motor in the blower or if motor was bad it would just not blow at all

 

[tomcat27]

I would look for a bad connection

 

[Ndx]

do you mean like lose connection ? I don't think thats it because can will be parked not moving and same issues ..

 

[Warstud]

Sorry to say: I think your control unit is no good.

 

[OVERKILL]

Could be the resistor module, the one on my M5 was fubar and exhibited similar symptoms. It was dirt cheap and about 5 minutes to replace.

 

[PhillyJoe]

When I had a similar issue with my daughter's '03 Civic, the top internet suggestion was the fan unit followed by the control unit followed by the resistor.

My problem was the resistor which I replaced after the fan and control units.

 

[Ndx]

Thx guys.

OVERKILL - where was the resistor located ?
Control Unit do you mean for whole HAVAC ?

I'm waiting for durametric to come then I will scan hvac module maybe it will help.

Hope that its not a control module because its going to be expensive

Got input from friendly mechanic at the dealer ... he said to start with replacing the blower 288$ nice ..

I'm not sure if anyone of you had in mind "blower regulator" - starting 2011 this is integral part of blower motor .. on Cayenne so looks like I just have to bite the bulet

 

[The_Jeff]

I wonder if there's a thermal breaker for the blower motor(s). I assume there are separate blower fans for driver and passenger?

If there's thermal overloading, you have a blower motor drawing too many amps.

-- never seen a cayenne.

 

[Ndx]

I believe that there is just one blower on passenger side.
2 zones

4 zones most likely have another blower in the back ...

Looking at Manuals no visible thermal braker - I was thinking about this before...

Cayenne = Toureg +-

thank you

 

[OVERKILL]

Originally Posted By: Ndx
Thx guys.

OVERKILL - where was the resistor located ?
Control Unit do you mean for whole HAVAC ?

I'm waiting for durametric to come then I will scan hvac module maybe it will help.

Hope that its not a control module because its going to be expensive

Got input from friendly mechanic at the dealer ... he said to start with replacing the blower 288$ nice ..

I'm not sure if anyone of you had in mind "blower regulator" - starting 2011 this is integral part of blower motor .. on Cayenne so looks like I just have to bite the bulet


I have no idea where it is located, is there a site like realoem.com (for BMW) that exists for Porsche that gives you the break-downs of components, their part numbers and their locations?

 

[bullwinkle]

If you can find the leads to the blower put a DC voltmeter on them & see if your +12 DC voltage is disappearing. The fact that it seems to die at regular intervals doesn't sound like a motor to me, should be more random or totally dead.

 

[Ndx]

Originally Posted By: OVERKILL
Originally Posted By: Ndx
Thx guys.

OVERKILL - where was the resistor located ?
Control Unit do you mean for whole HAVAC ?

I'm waiting for durametric to come then I will scan hvac module maybe it will help.

Hope that its not a control module because its going to be expensive

Got input from friendly mechanic at the dealer ... he said to start with replacing the blower 288$ nice ..

I'm not sure if anyone of you had in mind "blower regulator" - starting 2011 this is integral part of blower motor .. on Cayenne so looks like I just have to bite the bulet


I have no idea where it is located, is there a site like realoem.com (for BMW) that exists for Porsche that gives you the break-downs of components, their part numbers and their locations?


nope, nothing public like it, but I have full level access to repair manuals.
I guess the resistor = regulator that is part of the blower

I will measure the voltage on the plug.

But I have feeling that its the regulator = whole motor replacement ..

thx

 

[artificialist]

Sometimes if the motor isn't turning, and you smack the area where the motor is, it starts turning. That would show the motor failed due to bearing wear.

Anyway, when I had my ION, I had to replace the switchgear and blower motor resistor more than once. It sounds like a similar situation for you. Lucky for me, the A/C system wasn't electronically controlled, that makes many parts cost 10x as much.

 

[Ndx]

Hey guys,

Fyi new motor resolved issue ... Most likely it was bad control board built in with the motor.

Thx