The Peugeot 2008 is a popular compact crossover SUV that comes equipped with an advanced emergency response system, known as SOS. The SOS system is designed to automatically alert emergency services in the event of a severe accident. The system relies on a dedicated battery to function, and over time, this battery may require replacement to ensure continued operation. This report outlines the procedure and recommendations for replacing the SOS battery in a Peugeot 2008.
Unplug the small plastic wiring connector linking the old battery to the circuit board.
In many cases, driving the car for 15-30 minutes allows the car to charge the new battery and recognize its voltage.
: Ensure the ignition is off. It is highly recommended to disconnect the vehicle's main 12V battery negative terminal first to prevent electrical shorts during dash removal.
Do not short-circuit the battery wires. The old battery may still have residual charge. peugeot 2008 sos battery replacement
To achieve this, the telematics unit (the telecommunication module) has its own, small independent battery. These batteries typically last 3–6 years. Once the voltage drops below a certain threshold, the car detects the failure and displays the warning message. A persistent, intermittent beeping sound inside the cabin.
If your Peugeot 2008 is displaying a flashing red or orange , it likely indicates that the independent telematics unit’s backup battery is failing. This dedicated battery ensures that the e-Call system can function and contact emergency services even if the vehicle's main 12V battery is disconnected during an accident. Understanding the Peugeot SOS System
Ensure the ignition is off. It is often recommended to disconnect the main 12V battery first to prevent electrical short-circuits while working on sensitive modules.
: A failing battery triggers a warning chime, an instrument cluster error message, or a flashing/solid red light on the ceiling-mounted SOS button. The Peugeot 2008 is a popular compact crossover
It is important not to confuse the SOS backup battery with the vehicle's primary 12V starter battery or an EV's traction pack. Battery Type
Replacing this battery is more complex than a standard car battery change and often requires a "BSi reboot" or diagnostic reset to clear the error.
Once the glovebox is removed, you should see the telematics unit. You will need to open the unit to access the internal battery. Be careful not to damage any delicate components or wiring.
A flashing SOS light is a clear reminder to replace the backup battery to ensure the system is ready to function in a crisis. However, there are a few scenarios where replacement may not be strictly necessary. The Peugeot SOS and assistance service is typically guaranteed for . After this period, the service may be deactivated automatically, and the SOS button will cease to function. In this situation, a dealer may install a "dummy plug" to stop the light from flashing, rather than replacing the battery. This report outlines the procedure and recommendations for
Yes, many owners have successfully changed it themselves. The job requires removing the glovebox, accessing the telematics unit, and soldering a new battery in place. If you are not confident in your soldering or electronic skills, it is best to leave it to a professional.
Slide the telematics module back into its dashboard housing and secure all factory screws. Snap all dashboard plastic trim pieces back into place.
The SOS backup battery is a consumable item, and its life can vary. Many owners report failures around the 5-year mark. The system's service is typically guaranteed for 10 years from the vehicle's first registration, after which the service may be deactivated.