Backup Power Supply Battery SOS Module 3G0915089 for VW Audi Seat Skoda

  
This SOS Module Backup Power Battery is a replacement part designed for onboard telematics systems, eCall, and the TCB module in many vehicles from the VAG group. The clearest and most commonly used part name for this reference is backup battery, SOS module backup power battery, or TCB accumulator battery, rather than a simple “infotainment battery.” It corresponds to OEM reference 3G0915089, also searched as 3G0 915 089. This part serves as a backup power source for the vehicle’s telematics unit. It helps maintain certain functions related to the SOS emergency call, the eCall module, and connected services when the system requires it.

The listings consulted describe it as a telematics backup battery or TCB accumulator battery. The 3G0915089 reference is also found written as 3G0 915 089, 3G0-915-089, and 3G0.915.089. Technical sheets from specialized sellers indicate Li-ion technology, a voltage of 7.3 V, and a capacity of around 1490 mAh for this product family.

Product Highlights

SOS Module Backup Power Battery.

Compatible with OEM reference 3G0915089.

Other part numbers: 3G0 915 089, 3G0-915-089, 3G0.915.089.

Used for SOS module, eCall, TCB, and onboard telematics.

Technology commonly listed for this reference: Li-ion.

Voltage commonly listed: 7.3 V.

Capacity commonly listed: 1490 mAh.

Part sought for many Volkswagen, Audi, SEAT, Skoda, and Cupra vehicles depending on vehicle equipment and OEM reference.

Compatible References

3G0915089

3G0 915 089

3G0-915-089

3G0.915.089

Vehicle Compatibility

Compatibility depends on the vehicle’s equipment. The catalogs consulted list this reference across a wide range of VAG models.

A3 Sedan Sportback 8Y 2020.

Transporter Caravelle SH SJ 2020.

Important Before Purchase

Even if your vehicle appears in the list, it is essential to compare the OEM reference 3G0915089 printed on your original part. This battery exists for a wide range of vehicles, and compatibility may vary depending on trim level, telematics equipment, SOS module, or the vehicle market. Checking by OEM reference or VIN remains the most reliable method.

1 x SOS Module Backup Power Battery.

What is the real name of this part in France?

The most accurate name is Batterie d’Alimentation de Secours Module SOS. You may also find Batterie Fonction Secours, Batterie Accumulateur TCB, and Batterie Télématique Embarquée depending on the seller.

What is this battery used for?

It is used as a backup power source for the eCall SOS module or the vehicle’s TCB telematics unit. It helps maintain power to the relevant system depending on the vehicle configuration.

Is this an infotainment battery? The sources consulted mainly associate it with the SOS module, eCall, and onboard telematics, even though some sellers also use broader keywords related to onboard electronics.

What reference should be checked before ordering?

The main reference to verify is 3G0915089. You may also see it written as 3G0 915 089, 3G0-915-089, or 3G0.915.089.

What are the signs of a worn SOS module backup battery?

The part is usually replaced when there is a fault related to the SOS module, telematics, or backup power supply. The exact diagnosis depends on the vehicle and should ideally be confirmed before replacement.

Is this part compatible with all Volkswagen, Audi, SEAT, and Skoda vehicles?

It applies to a wide range of vehicles, but compatibility depends on the exact vehicle equipment and the original installed reference.

Verification by OEM reference or VIN is essential.

What technical characteristics are most often associated with this reference?

The listings consulted generally indicate a Li-ion battery, 7.3 V, around 1490 mAh, and 10.8 Wh for this reference or its replacement equivalents.

Is the product suitable as a replacement for the original part?

Yes, provided that OEM reference 3G0915089 matches your original part and your vehicle is included among the compatible applications.

Should the VIN be checked before purchase?

Specialized sellers recommend checking the VIN or OEM reference before purchase, since this part is used on many vehicles and comes in several equipment variants.

Does the package include anything other than the battery?

The listings consulted generally show a simple package containing 1 battery.

Check your OEM reference 3G0915089 and the compatibility of your SOS eCall TCB module before ordering to choose the correct part for your Volkswagen, Audi, SEAT, Skoda, or Cupra vehicle.