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2018 Touring in April 2019 one of the heater air blend motors started a ratcheting noise. took it to the dealer and was fixed under warranty. Now October 2019 it started the same thing, still under warranty but don't want this to be an every six month service! Any one else have air blend motor troubles?
 

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Those blend motor have plastic gears in them and an output shaft. Normally, the ratcheting is the sound of the gear teeth jumping because they're worn or the output shaft is meeting resistance. Since yours ratcheted again after new, maybe your shop should start focusing on what the output shaft is driving and not the blend motor itself.
 
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