Peugeot 2008 Sos - Battery Replacement

  • Reconnect the main car battery.

    • It is usually under the dashboard on the passenger side (LHD cars) or behind the glovebox.

    Sometimes the error code remains stored. You can clear it using an OBD2 scanner (e.g., Diagbox or a generic scanner with Peugeot support). Alternatively, drive the car for 10–15 minutes; the system often resets itself once it sees the new battery voltage is stable.

    Note: These steps are intentionally general because exact disassembly varies by year and trim. If your model’s SOS battery is non-replaceable, the telematics unit must be replaced as an assembly.

  • Access the overhead console / module

  • Locate and identify the SOS module

  • Inspect the module

  • Replace the battery

  • If battery is not replaceable:

  • Reconnect and reassemble

  • System initialization and checks

    • If your car struggles to start or electronics are flickering, you may need to replace the main battery under the hood.

    Crucial Warning for Start-Stop Models: If your Peugeot 2008 has the Start-Stop system (engine cuts out at red lights), it uses an AGM (Absorbent Glass Mat) or EFB battery. You cannot replace this with a standard lead-acid battery. The car's charging system will overcharge a standard battery, leading to failure. peugeot 2008 sos battery replacement

    Steps:

    The Peugeot 2008 SOS battery replacement is a necessary annoyance for perfectionists, but a poor design choice by Peugeot. The part is cheap, but access and resetting are unnecessarily difficult. If you’re handy, it’s a satisfying $30 fix; if not, it’s an overpriced dealer visit.

  • Disconnect the module

  • Open the SOS module

  • Locate the backup battery

  • Remove the old battery

  • Solder in the new battery

  • Reassemble and test

  • Refit overhead console in reverse order.