Heating Problems

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Nov 12, 2014 | 01:19 PM

Ted404

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From: Georgia

Heating Problems

First I will say I have already replaced the blend air servo. The 2 pipes on my heater core are scorching hot and I have minimal heat on the passenger side and nearly none on the driver side. Can anyone please offer some suggestions?

Thnks

Nov 12, 2014 | 10:52 PM

salimshah

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Joined: Apr 2001

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From: Austin, TX

Welcome to Club Lexus.

Pardon me asking this ... there are multiple servos. Are you sure you changed the blend servo and the arm is not stuck .

Salim

Nov 13, 2014 | 04:24 AM

Ted404

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From: Georgia

Yes it was the servo behind the heater core pipes. And there is good movement when I adjust the temp setting. Lexus suggested that I may be low on freon but I can't see where that could be a factor. I had another suggestion by a mechanic that there may be an issue with an internal hvac box and they would have to remove the dash just to check it. I have intermittent heat at best and the passenger side seems to work more frequently than the driver. I really hope there is not a lexus dealership visit in my future.

Nov 13, 2014 | 05:13 PM

salimshah

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From: Austin, TX

One more simple test.

With the engine cold (overnight rest) open the radiator cap and check the coolant level.

Salim

Nov 17, 2014 | 05:55 AM

Ted404

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From: Georgia

Are you thinking I may have an air pocket in my coolant

Nov 18, 2014 | 08:40 PM

salimshah

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From: Austin, TX

Quote:

Originally Posted by Ted404

Are you thinking I may have an air pocket in my coolant

I always start with the simple things ,,,, coolant level low.

Salim

Nov 21, 2014 | 04:43 AM

Ted404

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From: Georgia

Coolant level is ok. The only thing I noticed is the previous owner used dexos coolant instead of standard antifreeze, but that shouldn't make a difference