Under Hood ACC Drain Access and Cleaning

Back to: WIS 83.40 Automatic Climate Control (ACC) or Heating Ventilation and Air Conditioning (HVAC)

Location - Under Hood/Bonnet ACC Drain Access and Cleaning

LHD Vehicle

DIY Procedure - Under Hood/Bonnet ACC Drain Access and Cleaning

• Open the hood.
• Look on the passenger side under the wiper.
• Inspect the large duct with a grill on it.

• Look carefully at the hole in the bottom outer side. It is usually clogged and the area fills with water to a point where it spills over inside itself and enters the cabin.

• A visual inspection is usually fine, unless there is stuff in there.
• Use an air gun or a long screwdriver to clear the crap.
• The grill will easily unclip to gain better access for clearing the drain hole.

Acknowledgement: BenzWorld Members, Les Smith and TuneTime.