Open the windows (to prevent being locked out) and disconnect the negative terminal of your main car battery in the engine bay. Wait 5 minutes for the car's computers to shut down.
A: Technically yes, but the warning light will stay on, and you lose emergency call functionality. Some MOT/test stations may fail the car if the SOS light is illuminated.
: A faulty SOS battery can sometimes be accompanied by other electrical issues, such as a weak battery when starting the engine, flickering dashboard lights, or sluggish cranking when turning the key. These symptoms often point to a general battery problem or a defective battery sensor, rather than the SOS battery specifically. Nevertheless, if you notice any of these alongside a flashing SOS indicator, it's a good idea to have the entire electrical system checked by a professional.
The is a manageable DIY job that can save you significant dealer labor fees. By purchasing the correct battery and carefully accessing the telematics unit, you can clear the annoying dashboard error and restore the emergency functionality of your car. If you're interested, I can: peugeot 2008 sos battery replacement
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.
Reinstall the telematics box and tighten its mounting screws.
: Snap the access door closed. Reconnect all color-coded aerial plugs and electrical looms back into the primary telematics box. Phase 4: Reconnecting the Car System Open the windows (to prevent being locked out)
: A solid or flashing orange SOS light typically indicates that the telematic unit's backup battery is no longer holding a sufficient charge.
Locate the small, dedicated plastic access door on the side of the telematics box.
Inspect the module
Like all lithium-ion components, the SOS battery degrades over time. It generally lasts between , depending on vehicle age and environmental factors. Because it continuously monitors system readiness, it will eventually lose its ability to hold a charge, prompting the system to trigger a fault code. Step-by-Step Guide: Peugeot 2008 SOS Battery Replacement
| Option | Estimated Cost | Pros | Cons | | :--- | :--- | :--- | :--- | | | Battery cost: ~€8.50 for a pack of 4 (approx. €2-3 per battery ). The owner had to buy a 4-pack as the specific batteries were sold in a set. | Lowest possible cost. Rewarding to fix yourself. | Requires soldering and interior disassembly skills. Risk of damaging the telematics unit. | | Professional Repair | Part plus labor can be significant. One Peugeot owner was quoted €180 for just the battery. A full replacement service at a dealership will likely be higher. | No risk of damage. Guaranteed work. | Significantly more expensive. | | "Blind Plug" Bypass | Part cost is unknown but likely modest. | Simple and clean solution to disable the alert. | Disables the SOS feature. |
If your car struggles to start or electronics are flickering, you may need to replace the main battery under the hood. Some MOT/test stations may fail the car if
