Some customers may comment on one of the following conditions:
Vehicles built between October 15, 2015 – March 12, 2016, a flutter type noise may be heard from the HVAC when in manual mode and set to either floor or tri-level mode.
Vehicles built on/after March 13, 2016 may have excessive condensation on the windshield above the center defrost vents.
These may be caused by one of the following conditions:
Flutter noise may be due to the HVAC door making contact to the case during high fan speed.
Windshield condensation may be due to the foam pads on the defrost door allowing too much air to pass through, causing excessive condensation on the outside of the windshield.
Note: During extreme humid conditions, some condensation can be considered normal.
In certain settings, the system is designed to bleed air to the windshield to prevent it from fogging/freezing in cold weather conditions where the ambient temperature is extremely cold and the inside cabin temperature is hot.
The best recommendation for customer comfort, and to prevent condensation during hot/ humid ambient conditions and cold cabin air, is to place the AC in “auto” or manually set it to the “bi-level” (floor and vent/face/dash) position. Recommended temperature setting is between 68-72 degrees (20-22°C).
The table shown above helps to explain the air flow distribution.
OSA = Outside Air
Rec = Recirculated Air
F/C = Full Cold
F/H = Full Hot
An updated software calibration has been released to address the flutter type noise condition.
Remove both foam pads located on the defrost door to address the excessive windshield condensation then update the software to address the flutter issue that results when the foam is removed.
Some technicians may comment that the back glass, which is an integral part of the folding top canvas, had broken after cycling the folding top assembly. This will be noticed very soon after a folding top canvas or a side rail has been replaced for service.
The cause of this concern may be due to improper reassembly of the folding top linkage where it connects to the back glass.