Ambient Temperature / Relative Humidity Reference Chart: Diagnosis

2013 Mini Cooper S Paceman, Automatic TransSECTION Diagnosis
WARNING: This page does not describe the selected car, but rather 41 other vehicles, including the 2003 BMW M5, 2003 BMW M3, 2003 BMW 540i, 2003 BMW 530i, and 2003 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.
  • The expansion valve is stuck closed; or is plugged by moisture, ice, or foreign material.


  • There may be a leak in the compressor, or the drivebelt may be loose/worn. The compressor pistons, rings, valves, or cylinders may be excessively worn or scored.


  • The system may be overcharged
  • The condenser may not be operating properly.
  • Air flow through the condenser may be poor.
  • The auxiliary fan may not be operating properly.
    Fig 1: Checking Airflow & Fan Operation
    G03389425Courtesy of BMW OF NORTH AMERICA, INC.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.