BMW X5: Air Conditioner Test (R 134A)
Before A/C efficiency test, satisfy following conditions:
1. Provide a MoDiC or DIS. Safeguard electrical system integrity by checking the fault memory (no faults in the fault memory).
2. Provide a thermometer with separate gauge.
3. Perform the test in a suitable work bay with an ambient temperature between 20 ºC and 30 ºC.
Re 1:
Connect MoDiC or DIS to car and display evaporator temperature.
Re 2:
Position a thermometer with a separate gauge approx. 5 cm below the roof liner at the height of the B-pillar.
Lay gauge outwards out of vehicle interior.
Re 3:
Heating up vehicle interior:
- A/C button is not activated during heating up.
- Close all windows and doors.
- Set recirculated air mode.
- Select air distribution mode for footwell and defrosting.
- Maximum temperature setting.
- Maximum fan stage.
- Run engine at approx. 2000 RPM until operating temperature is reached, then idle speed.
A/C efficiency test:
Turn on A/C compressor at a vehicle interior temperature of 50 ºC.
After 3-4 minutes, the evaporator sensor temperature must be > or = 15 ºC.
Draw off A/C system if this temperature is not reached. Measure amount of refrigerant drawn off.
If drawn-off quantity does not correspond to specified fill quantity : supplement refrigerant and repeat test.
If fill quantity is correct, continue troubleshooting by pressure measurement.
READ NEXT:
Instructions For Handling Refrigerant R 134A
WARNING: Although R 134a at normal temperature is non-toxic,
non-flammable and
not explosive in air in any mixture ratio, it is still essential to follow
various safety precautions.
The filled refrig
Leak Testing With Ultraviolet Additives (UV Additives) (BMW
Leak-Testing Case)
IMPORTANT: It is absolutely essential to read and comply with the
equipment manufacturer's
instructions for use provided in the equipment case!
Read and comply with the instructions for use provided
Drawing Off, Evacuating And Filling A/C System (R 134A)
WARNING: Refrigerant circuit is under high pressure!
Repair work may only be carried out on a DEPRESSURIZED refrigerant
circuit!
Avoid contact with refrigerant and refrigerant oil.
Follow safety inst
SEE MORE:
Piston With Ring And
REMOVING AND INSTALLING/REPLACING ALL PISTONS (N62TU)
Special tools required:
00 9 120
11 5 430
11 5 440
11 5 450
IMPORTANT: Re-install piston, conrod and bearing shells back in the
same position and in the same installation location.
Conrods and conrod bearing caps are denoted with the same
Key Card
Principle
The Key Card allows the vehicle to be unlocked
and locked, as well as started.
General information
The Key Card is available with Comfort Access.
Depending on the national-market version, the
Key Card may not be available.
A digital key that has already been paired with
the vehicle is in
