Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
NIPPONDENSO Compressor Identification & Coding (GROUP 87, NO. 96-03)
Reference number: GROUP 87, NO. 96-03
NIPPONDENSO COMPRESSOR IDENTIFICATION & CODING
TECHNICAL SERVICE BULLETIN
NIPPONDENSO COMPRESSOR, IDENTIFICATION AND CODING
Model(s): 1996 Audi A4, A6
Group: 87 - Air Conditioner
Bulletin No.: 96-03
Date: March 25, 1996
PRODUCTION
The A/C compressor has been changed from "Zexel" to a "Nippondenso" compressor as of the following VIN's:
A4: 8D_TA126954
A6: 4A_TN046055
SERVICE
For Vehicles equipped with a "Zexel" compressor, the coding of the A/C control head is 00062.
For Vehicles equipped with the "Nippondenso" compressor (shown in Fig 1 ) the coding of the A/C control head has been changed to 00162.
The Nippondenso compressor can be identified by the absence of the speed sensor as shown by (arrow -A-) in the body of the Zexel compressor. See Fig 2 .
Whenever coding a control head, the coding must be set according to the type of compressor installed in the vehicle.
For more details see Technical Bulletin GROUP 87, NO. 96-02 .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.