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A/C cooling is weak and gradually loses performance

Q: What are the symptoms of A/C cooling is weak and gradually loses performance in Bentley BENTAYGA?

No cold air from vents. Problem appears while driving

Q: How to fix A/C cooling is weak and gradually loses performance in Bentley BENTAYGA?

Replacing the air conditioning condenser with a new element (requires disassembly of the front bumper) and filling the system with an appropriate refrigerant (R1234yf) with a nitrogen leak test.

in Bentley BENTAYGA (2016-2026)

Symptoms

No cold air from vents
Problem appears while driving

DTC error codes

B10ABF0

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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

Modular (Zmienna strefowość Hybrid Climate / baterie PHEV)

Refrigerant: R1234yf / R134a Amount (g): 620 - 750g Oil: POE (dla hybryd) / PAG YF Oil (ml): 150ml

See full specification

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A/C cooling is weak and gradually loses performance

Symptoms

DTC error codes

A/C Technical Specifications

Other problems in BENTAYGA

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