BMW 7 Series: Cleaning Evaporator
WARNING: When handling cleaning agent, observe following protective measures:
Wear protective rubber gloves and protective goggles.
If cleaning agent comes into contact with eyes or skin, wash immediately with lots of water.
Comply with NOTES AND INSTRUCTIONS ON HANDLING CLEANING AGENTS.
A new spray lance was developed for professional cleaning and disinfection of the evaporator of the heating and air conditioning system. Course dirt contamination and bacteria can only be effectively eliminated with this spray lance.
IMPORTANT: To avoid dirtying vehicle interior:
- Close all air vents
- Heater - A/C system must be switched to air recirculation function
- Cover carpet in work area
Recycling: Carry out the cleaning operation in a suitable washing bay as the emerging cleaning agent escapes through the drain openings in the transmission tunnel.
After completing cleaning, allow car to drip-dry for approx. 5 minutes.
Necessary preliminary tasks:
- Remove REAR UNDERBODY PROTECTION
- Remove MICROFILTER FOR PASSENGER COMPARTMENT VENTILATION
NOTE: Cleaning procedure must be performed in two steps with special tool 2 222 502.
STEP 1:
Insert special tool 2 222 502 in the rear opening of the microfilter housing (1) at position (2) as shown in Fig.168.
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Fig. 168: Inserting Special Tool 2 222 502
Move special tool 2 222 502 from top downwards (A) up to stop.
At the same time, press special tool 2 222 502 at position (1) in the direction of the arrow against the microfilter housing.
Spray approximately half of the cleaning agent. Then pull the special tool 2 222 502 out of the microfilter housing.
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Fig. 169: Spraying Half Of Cleaning Agent
Step 2: Insert special tool 2 222 502 in the rear opening of the microfilter housing (2) at position (1) as shown in Fig. 170.
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Fig. 170: Inserting Special Tool 2 222 502
Move special tool 2 222 502 from top downwards (A) up to stop.
At the same time, press special tool 2 222 502 at position (1) in the direction of the arrow against the microfilter housing.
Spray the remaining half of the cleaning agent. Then pull the special tool 2 222 502 out of the microfilter housing.
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Fig. 171: Spraying Remaining Half Of Cleaning Agent
NOTE: Set heating - A/C system to footwell ventilation and fresh-air mode. Open side windows/doors.
Start the vehicle and let the heating and air conditioning system run for at least 5 minutes at maximum blower output.
In order to eliminate the last remnants of cleaning agent, repeat this process shortly before handover to the customer.
Spraying Lance For Air Conditioning
Special tool 2 222 502
The spraying lance has a special form that is adapted specifically to the air conditioning unit.
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Fig. 172: Identifying Spraying Lance (1 Of 2)
The spraying lance is used in combination with the HRS spray gun (order number 81 45 9 429 217).
The Seku Aircond cleaning agent can no longer be ordered; instead, air conditioner cleaner (order number 83 19 0 447 911) is now available.
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Fig. 173: Identifying Spraying Lance (2 Of 2)
READ NEXT:
Instructions For Opening And Replacing Parts In Refrigerant Circuit
WARNING:
Avoid contact with refrigerant and refrigerant fluid
Follow safety information for handling R134A refrigerant.
Follow safety information for HANDLING REFRIGERANT FLUID
IMPORTANT:
Alway
Removing And Installing Or Replacing Expansion Valve
Notes
WARNING: Danger of injury!
Refrigerant circuit is under high pressure!
Avoid contact with refrigerant and refrigerant fluid.
Read and comply with safety information:
Follow safety information
Removing And Installing/Renewing Evaporator
Notes
NOTE: Non-coated evaporators were installed in connection with ozone
generator on
vehicles built before 09/2010.
A coated evaporators without an ozone generator is installed on vehicles built
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System Components
Components of the Central Locking System
Footwell Module
The footwell module is installed at the left-hand A-pillar. It evaluates the
status of the door contacts and reads in
the Hall sensor signals of the lock barrel in the driver's door and transfers
the information via the K-CAN2 to
the junctio
Low Beam Headlight
To switch on the low beam headlights, the light switch in the lights control
panel must be turned to low beam
headlight (switch position 2) When the low beam headlights are switched-on the
bi-xenon headlights are
activated.
After turning off the engine, the side lights stay on although the light
