# Service bulletin A871237 2020124\-

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10122846
- Published by NHTSA: 2017\-11\-08
- Manufacturer's number: A871237 2020124\-
- Manufacturer's date: 2012\-11\-16
- NHTSA component: EQUIPMENT:APPLIANCE:AIR CONDITIONER; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; ELECTRICAL SYSTEM

## NHTSA's summary

Supersedes Technical Service Bulletin Group 87 number 12\-32 dated September 5, 2012. Air conditioning is inoperative. The HVAC blower functions normally. Battery discharged; however, when charged, there is no bus silence when vehicle ignition is off. The A/C Pressure/Temperature Sensor G395 leaks refrigerant. This causes Sensor G395 to show an incorrect or implausible value when reading MVBs. An incorrect signal or a low refrigerant level in the system can cause the air conditioning compressor to deactivate. The LIN cable connecting the J519 Central Electrics Control unit to Sensor G395 is pinched or cut. This affects the A4/S4, A5/S5 Coupe and Cabriolet, and Audi Q5 vehicles. The A6 and A8 are not affected by this type of failure. The pressure sensor G395/G65 sends an incorrect signal that prevents bus silence and the battery is discharged. Sensor G395 is a LIN slave of Vehicle Electrical System Control Module J519. Vehicle Electrical System Control Module J519 transfers the information provided by the sensor via the comfort data bus to Climate Control Module J255.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2012/MC-10122846-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2012/MC-10122846-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Equipment and accessories, Glass, wipers and mirrors, Heating and air conditioning

## Vehicles listed

- 2009 to 2010 AUDI A4
- 2011 AUDI A4 AVANT
- 2008 to 2011 AUDI A5
- 2005 to 2011 AUDI A6
- 2004 to 2010 AUDI A8
- 2008 to 2011 AUDI S5

## Recalls for the same vehicles and component

- [2016409](/recalls/tc/2016409.md), 2016-08-22: Electrical
- [16V415000](/recalls/nhtsa/16V415000.md), 2016-06-09: VISIBILITY:SUN/MOON ROOF ASSEMBLY
- [2016287](/recalls/tc/2016287.md), 2016-06-06: Accessories

## Other bulletins for the same vehicles and component

- [TSB\_20741717\_15](/bulletins/11036915.md), 2026-09-04, Service bulletin: VISIBILITY/WIPER. This bulletin provides information on the GFF test plan required for AC compressor replacements regardless of the concern.
- [TSB\_2059335\_7](/bulletins/11034643.md), 2026-07-07, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides information when there are noises from the area around the instrument cluster.
- [TSB\_2074729\_3](/bulletins/11034634.md), 2026-07-07, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides informationwhen noises/vibration are detected from front of vehicle in dynamic mode.
- [TSB\_2081405\_1](/bulletins/11031051.md), 2026-04-07, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides informaiotn about various infortainment system complaints.
- [TSB\_2024323\_13](/bulletins/11030985.md), 2026-04-07, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides information when the parking assistance gives false warnings.
- [TSB\_2024323\_12](/bulletins/11030984.md), 2026-04-07, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides information when the parking assistance gives false warnings.
- [TSB\_2059335\_6](/bulletins/11029370.md), 2026-03-03, Service bulletin: ELECTRICAL SYSTEM. This TSB provides information when there are noises from the area around the instrument cluster.
- [TSB\_2080681\_1](/bulletins/11028448.md), 2026-02-06, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides information regarding contact checks for event memories, intermittent.
- [TSB\_2080329\_1](/bulletins/11028446.md), 2026-02-06, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides informaiotn when there are noises from the headliner.
- [TSB\_2056019\_5](/bulletins/11028397.md), 2026-02-06, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides information when the anti\-theft alarm activates for no reason, or does not activate.

JSON: [/v1/bulletins/10122846](/v1/bulletins/10122846)

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