: The primary indicator that the system's internal self-diagnosis tool has detected a low voltage or dead backup cell.
Whichever option you choose, address the issue to ensure your vehicle's critical safety systems are ready when you need them most. If in doubt, a trusted mechanic or Peugeot dealer can provide the best course of action.
: If you accidentally press the button, don't just hang up—explain the mistake to the operator. If they hear silence, they may assume you are incapacitated and dispatch emergency responders. Assistance vs. SOS : The button with the Peugeot lion logo is for roadside assistance (mechanical issues), while the "SOS" button is strictly for emergencies (accidents or medical crises). Are you planning to replace this yourself , or would you like help finding a qualified Peugeot service center 19 Jul 2025 —
If you own a modern Peugeot 2008 (typically models from 2016 onwards, including the second-generation 2020+ models), you may one day see a warning light that stops many drivers in their tracks: “SOS system faulty” or “Emergency call system service required.” Before you panic and book an expensive garage appointment, there is a very high chance that the fix is simple, cheap, and quick:
Typically 3.2V Lithium-ion or 2.4V NiMH (depends on model year) 9825152580, 1611139480, 9801452680 Location Housed inside the independent telematics box (BTA module) peugeot 2008 sos battery replacement
The SOS battery is a small, rectangular plastic-wrapped pack connected by a thin wire harness. It is usually held in place by a single screw or a slide-in plastic clip. 4. Swap the Battery
: This is a small, dedicated backup battery that powers the telematics unit. It generally needs replacement every 4 to 5 years .
The SOS system is part of the Peugeot Connect SOS & Assistance service. It uses a small, internal backup battery housed within the telematics module.
Reconnect the negative terminal of your main 12V car battery. Troubleshooting and Error Clearing : The primary indicator that the system's internal
: Gently pull the telematics unit forward. Unplug the color-coded wiring harnesses (GPS antenna, cellular antenna, and main power loom) by depressing their locking tabs. Phase 3: Swapping the Internal SOS Cell
Replacing the backup battery can be a straightforward DIY task for a technically inclined owner. Here is a step-by-step guide based on owner experiences.
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Replacing the battery is a delicate procedure because it involves soldering. If this is not your strength, it is best to leave this to a professional. : If you accidentally press the button, don't
If the light remains on after a short drive, the fault code is likely hard-stored in the computer memory. You will need to connect an OBD2 diagnostic tool (such as DiagBox or a high-quality aftermarket scanner) to manually clear the telematics fault codes.
Use a T20 or T25 Torx screwdriver to remove the screws holding the TCU unit. Unplug the telematics connector.
This battery ensures that if a severe accident destroys the main car battery, the emergency system can still make a call to emergency services. Symptoms of a Failed SOS Battery