Under Hood ACC Drain Access and Cleaning

From W220 S-Class Encyclopedia
Jump to navigation Jump to search

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

W220 ACC Under Hood Drain Access.JPG


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.
W220 ACC Under Hood Drain Access Close Up.JPG
  • 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.
W220 ACC Under Hood Drain Hole Close Up.JPG
  • 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.