Air conditioning radiator in the saloon BMW 520D F11 2011 TOURING

OEM: 9159803

Disassembled car photo

Engine running

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What is this part and why does it matter?

This in-cabin air-con radiator (evaporator) cools the air entering the cabin, absorbing heat as the refrigerant evaporates.

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Signs of a faulty part

If you notice any of the following, the part likely needs replacement:

  • Air conditioning doesn’t cool the cabin
  • An unpleasant smell when the air conditioning is switched on
  • Windows misting up from inside even with the air-con running

Installation information

Needs significant dashboard removal, and the system vacuumed and recharged with refrigerant by a specialist afterward.

Frequently asked questions

Often moisture, dust and bacteria building up on the evaporator’s surface, which needs cleaning or replacing if heavily contaminated.

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