amby, agree with cns on the point of the fuse. That should be your first checkpoint. In the under the hood fuse relay box, fuses 41 (120A), 42 (50A), and 52 (30A) can all keep the rear blower from running, as can fuse 3 (7.5A) in the driver's side underdash fuse/relay box. If the fuse is okay, you do want to check the AC filter. There's a small filter for the rear AC which is located behind the plastic trim panel of the center console on the driver's side. If you pop the cover open you expose the filter and clean/vacuum it accordingly. The filter can become totally clogged, this in turn can cause your rear AC to overheat and cause the power transistor to fail. The other thing you want to check on is the motor relay. If this fails, your blower will not function. there is plenty more information on [http://www.mdxers.org/|this forum] Hope this helps, good luck.
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amby, agree with cns on the point of the fuse. That should be your first checkpoint. In the under the hood fuse relay box, fuses 41 (120A), 42 (50A), and 52 (30A) can all keep the rear blower from running, as can fuse 3 (7.5A) in the driver's side underdash fuse/relay box. If the fuses are okay, you do want to check the AC filter. There's a small filter for the rear AC which is located behind the plastic trim panel of the center console on the driver's side. If you pop the cover open you expose the filter and clean/vacuum it accordingly. The filter can become totally clogged, this in turn can cause your rear AC to overheat and cause the power transistor to fail. The other thing you want to check on is the motor relay. If this fails, your blower will not function. there is plenty more information on [http://www.mdxers.org/|this forum] Hope this helps, good luck.
amby, agree with cns on the point of the fuse. That should be your first checkpoint. In the under the hood fuse relay box, fuses 41 (120A), 42 (50A), and 52 (30A) can all keep the rear blower from running, as can fuse 3 (7.5A) in the driver's side underdash fuse/relay box. If the fuse is okay, you do want to check the AC filter. There's a small filter for the rear AC which is located behind the plastic trim panel of the center console on the driver's side. If you pop the cover open you expose the filter and clean/vacuum it accordingly. The filter can become totally clogged, this in turn can cause your rear AC to overheat and cause the power transistor to fail. The other thing you want to check on is the motor relay. If this fails, your blower will not function. there is plenty more information on [http://www.mdxers.org/|this forum] Hope this helps, good luck.
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