Peugeot 2008 Sos Battery Replacement [2021] May 2026

Replacing the SOS (Emergency Call) backup battery in a Peugeot 2008

For model-specific diagrams, you can download the official handbook from Peugeot ServiceBox by selecting your vehicle's registration date.

What Is the SOS Battery & Why Does It Fail?

The Peugeot 2008 has an internal backup battery for the emergency call system (eCall / Peugeot Connect SOS). It’s not the main car battery. After 3–5 years, this small 3.7V Li-ion battery dies. You’ll see warnings like: "Emergency call system faulty" or "SOS system service required" – even though everything else works. peugeot 2008 sos battery replacement

DIY Cost: Purchasing the backup battery from a parts supplier or dealer like WJ King typically costs between $60 and $80.

Q: The warning came back after a week. What now?

A: Possible causes: poor solder joint, wrong battery type, or the entire SOS module is faulty. Try a second reset with an OBD2 scanner. Replacing the SOS (Emergency Call) backup battery in

Access the overhead console / module

: Professionals often carry out a software update on the telematics module simultaneously to ensure system stability. Estimated Costs Many manufacturers disable live SOS calls for safety;

: Replace the internal cell (typically a specialized Ni-MH or Li-ion pack, not a standard AA battery) with the specific part number provided by Peugeot. Software Update