2010 LR4 HSE Luke warm heat on driver side

Mylr4

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After my water pump was change, my heat on the driver side would only get Luke warm. In the summer, all vents release cold air expected. Dealership is saying they need to pull the entire dash to determine the problem. The cost is to expensive to even find out with them, let alone, cove the cost to fix it. Any help input would be appreciated. Thanks
 

jlach993

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Sounds like a blend door issue….honestly when using the heat you should be using the feet setting anyways. Heat rises. Plus the constant dry heat in your face isn’t good for your eye lubrication. I’m not 100% sure though.
 

Mylr4

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Thanks, I was thinking in first trying to get the heater core flushed, hoping that would slove the problem.
 

RyanRR

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I had the same issue in my RRS.

My Indy shop said the most likely issue was one of two things; a blocked heater core or blender doors.

Trying to flush the system is the cheapest option, but with the layout of the heater core it's very hit or miss on if it'll work. My shop recommended trying a coolant flush (which worked for me), but said if that didn't work they'd pull apart the dash and plan on replacing the heater core, and he said he'd pull the HVAC apart and inspect the doors to see if they were working.
 

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