Introduction
This Technical Bulletin addresses Air Conditioning (A/C) performance not as expected in certain LAND ROVER models.
Symptoms
The symptoms include:
- Ac vent temperatures ‘cycle’ (blowing warm and then cold)
- Windshield, rear window, and/or door windows mist up in cool (158°C or lower) ambient temperatures
- Poor cooling performance of the Air Conditioning (A/C) system
- Warm, damp or musty smells coming from the vents
Cause
The cause of this issue is attributed to:
- Low pressure recorded on the high pressure system
- High pressure recorded on the low pressure system
- A/C compressor clutch (where applicable) not working properly
- A/C compressor electronic control valve worn out or sticking
Action
Follow the appropriate Diagnostic Procedure ‘A’ or ‘B’ and, if necessary, perform the service instructions outlined below.
Parts
The following parts are involved:
- Compressor Direct Pressure Sensing (DPS) Valve kit LRZ (L359); LR4 (L319) 5.0L V8 Petrol; Range Rover Sport (L320); Range Rover (L322)
- Compressor Direct Pressure Sensing (DPS) Valve kit AIl other vehicles
Warranty
Repair procedures are subject to change and times are guidance only. Always refer to JLR claims submission system to obtain the latest repair time.
Manual:
Download: Jaguar Land Rover North America, LLC Technical Bulletin 412-01/-03 Climate Control System
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