What are the symptoms of Unusual noise and metallic grinding when A/C is on in BMW 535i?

Weak cabin cooling. Unusual noises when A/C is turned on

High Priority 100% confidence

Unusual noise and metallic grinding when A/C is on

Q: How to fix Unusual noise and metallic grinding when A/C is on in BMW 535i?

The system should be drained by machine and the condenser (often damaged part number 64509255983) replaced with a technically improved component updated by the manufacturer (part number 64509391489). Additionally, when replacing it, it is necessary to install a new bag with desiccant and a new sealing O-ring. A very common fault, BMW issued a repair bulletin SI B64 10 15 on this issue, accepting the design defect.

in BMW 535i (2013-2013)

Symptoms

Weak cabin cooling
Unusual noises when A/C is turned on

DTC error codes

No codes

Verifying license...

Technical diagnosis (Premium)

Recognized technical fault:

Auxiliary controller voltage instability detected

Technical analysis

Detailed analysis of HVAC controller operation parameters, CAN bus data readings, and diagnostic signal waveforms. Purchase PRO access or log in to read the full fault analysis.

Confirmed solution

Complete step-by-step repair procedure including module non-volatile memory reset, sensor calibration, and correct wiring routing. Unlock the full report to see the instruction.

Parts needed

Filters ferrite anti-interference / noise suppressor
Auxiliary starting battery (depending on cell status)

Workshop hacks

Important workshop tips for mechanics regarding bypasses without expensive control module replacement and manufacturer software service bulletins.

TSB / TPI service bulletins

TSB-24-HVAC-01TPI-2068943/2

A/C Technical Specifications

Refrigerant specifications for this model are available in the catalog.

Open refrigerant database

Have this problem?

Generate a personalized AI report for your BMW 535i or book a workshop visit.

Generate AI report Schedule visit

Unusual noise and metallic grinding when A/C is on

Symptoms

DTC error codes

A/C Technical Specifications

Other problems in 535i

Have this problem?