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Removing and installing fresh air intake grille > < Removing and installing ambient temperature sensorG17

A1

Checking and cleaning plenum chamber water drain
   
Checking and cleaning plenum chamber water drain
  Note
t  Drainage of water out of the plenum chamber may be impaired by deposits such as leaves and pine needles accumulating in the water drain on the left and right -arrow-. The water level in the plenum chamber then rises if the vehicle is taken to an automatic car wash or in the event of heavy rain, water ingresses by way of the intake duct into the air conditioner unit (heater) and is blown by the fresh air blower onto the evaporator together with the air conveyed.
t  If the water drains on the left and right -arrow- are clogged with leaves and pine needles, the drains may freeze up in winter and prevent water drainage. After a short journey, the heat emitted by engine and exhaust system melts the ice in the drains again. By the time the vehicle arrives at the workshop, the water may have already drained out of the plenum chamber.
  A87-10545
t  Water may flow into the fresh air intake duct if the plenum chamber cover -1- is damaged or not properly fitted. This may result in complaints about odours from the heater/air conditioner and/or moisture in the passenger compartment.
Sequence of operations
–  Remove the wiper arms → Rep. gr.92.
–  Detach the seal -2-.
  Caution
Risk of damage to the scuttle panel trim.
Apply a small quantity of soap solution to the transition between windscreen and scuttle panel trim.
–  Starting at the edge of the windscreen, carefully lift the scuttle panel trim -1- vertically upwards -arrows- off the fastener at the windscreen → Rep. gr.50.
  A50-10151
–  Check for contamination of the water drain -arrow- on the left and right.
l  The water must be able to drain off.
–  Clean contaminated water drains.
  A87-10545

Removing and installing fresh air intake grille > < Removing and installing ambient temperature sensorG17