Warning: Do not short-circuit the battery wires. The old battery may still have residual charge.
Replacing the SOS backup battery in a Peugeot 2008 is a specialized task because this battery is separate from the main 12V car battery and is typically housed within the autonomous telematics box. Key Replacement Details
Location: The battery is usually located under the dashboard near the steering column or within the overhead console near the emergency call module. Some sources also suggest it may be near the rear seats or trunk.
Symptoms of Failure: A flashing red light on the SOS button often indicates a flat or faulty backup battery. An orange flashing light for 3 minutes after starting may alternatively indicate an expired service subscription.
Lifespan: These batteries typically last about eight years, though capacity may begin to drop after one year of use.
DIY vs. Professional: While some attempt this by removing dashboard panels, professional help is often recommended. The telematics unit is sensitive, and its fine wires can be easily damaged during removal. Estimated Costs
Replacing an SOS module battery can be significantly more expensive than a standard battery due to labor and specialized parts:
Dealer Quotes: Some owners have reported dealer quotes ranging from £250 to over £600 for SOS module-related battery services.
Diagnostic Fees: Dealerships often charge an average of $150–$250 just for the initial diagnostic check. Safety Precaution
If you attempt a DIY replacement, always disconnect the main 12V vehicle battery first to avoid electrical shorts or accidental airbag deployment. For the main battery, remember to disconnect the negative terminal first.
How to replace the car battery Peugeot 2008 mk1 1.2 PURETECH
Replacing the SOS battery in a Peugeot 2008 is a common task when the SOS light begins flashing orange or stays lit, indicating the internal backup battery for the telematic unit is failing Identifying the Need for Replacement The Warning
: A solid or flashing orange SOS light typically indicates that the telematic unit's backup battery is no longer holding a sufficient charge.
: Diagnostic assessments often show that these batteries fail when they can no longer power the module for the required emergency duration (typically at least 5 minutes). Location & Battery Type peugeot 2008 sos battery replacement
: In the Peugeot 2008, the SOS battery is located within the Independent Telematic Unit
. For many models, this unit is found behind the dashboard display or within the overhead console. Battery Type
: This is a specific telematic backup battery, not a standard AA or AAA. You should use the exact replacement part specified by Peugeot for your vehicle's VIN. Replacement Process
While the main vehicle battery is easily accessible under the bonnet, the SOS battery requires more careful disassembly. Preparation
: Disconnect the vehicle's main 12V battery first to prevent electrical shorts or accidental deployment of emergency systems. Accessing the Unit
Carefully remove the trim panels (often the overhead console or dash display trim) using plastic pry tools to avoid damaging clips.
Unscrew the telematic module to reveal the battery compartment. Swap the Battery
: Remove the old backup battery and click the new one into place. Reassembly & Testing
: Reinstall the module and trim. Reconnect the main vehicle battery. The SOS light may take a short drive to recalibrate and turn off. Where to Find Parts & Help
For this specific safety-related part, it is best to use official channels: Official Parts : You can find the correct battery through the Peugeot Services Store or a local parts department. Expert Assistance
: If the light remains red or orange after replacement, you may need a software update or a telematic unit reset performed by a specialist like Oaktree Garage SOS Light Flashing Orange - French Car Forum
The Peugeot 2008 is equipped with an independent telematics system that relies on a dedicated internal backup battery. If you see a flashing SOS light or a "Backup Battery Fault" message on your dashboard, it is time for a replacement. Why Your Peugeot 2008 Needs an SOS Battery
The SOS system (Peugeot Connect SOS) is a safety feature that automatically calls emergency services in the event of an accident. Operates independently of the main car battery. Triggers automatically if airbags deploy. Allows manual emergency calls via the SOS button. Ensures GPS location tracking for rescue teams. Signs You Need a Replacement Warning: Do not short-circuit the battery wires
Most Peugeot 2008 owners encounter battery issues after 4 to 6 years of vehicle use. Watch for these red flags:
Dashboard Warnings: "SOS Emergency Call System Failure" or "Telematics Unit Fault."
LED Indicators: The SOS button light flashes orange instead of staying green.
Audible Beeps: A short beep sequence upon starting the ignition.
Age: If your vehicle is over five years old, the internal lithium cell is likely nearing the end of its life cycle. Step-by-Step Replacement Guide
In the Peugeot 2008, the SOS battery is housed within the Autonomous Telemetry Box (ATB), usually located behind the dashboard or the glovebox assembly, depending on your specific model year. 1. Gather Your Tools Plastic trim removal tools. Torx T20 screwdriver.
Replacement Peugeot OEM SOS Battery (typically a 3.6V or 4.2V lithium pack). 2. Access the Telematics Unit
For most 2008 models, you must remove the side panel of the dashboard or the internal glovebox lining. Gently pry the plastic clips to avoid snapping the delicate trim. 3. Locate the Battery Compartment
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
Unplug the old battery connector. Plug in the new unit, ensuring the pins align perfectly. You should hear a faint click when the connector seats. 5. System Reset
Once installed, start the engine. The warning light may stay on for a few minutes while the system performs a self-test. In some cases, you may need an OBD-II diagnostic tool to clear the "stored fault" from the ECU memory. Important Maintenance Tips
💡 Buy OEM Parts: Cheap third-party batteries often lack the correct voltage or heat resistance required for automotive safety systems.
💡 Check the Main Battery: Sometimes, a dying main vehicle battery can trigger false SOS errors. Ensure your primary battery is healthy before tearing apart the dashboard. Replacing the SOS backup battery in a Peugeot
💡 Professional Coding: If the error persists after a DIY swap, a dealer may need to "tele-code" the unit using Peugeot’s DiagBox software to recognize the new power source.
If you'd like to find the exact part number for your specific model year or need help locating a local specialist to handle the coding, just let me know! AI responses may include mistakes. Learn more
The SOS (emergency call) system in the Peugeot 2008 is part of the vehicle’s telematics/safety module and uses an internal backup battery to ensure the unit can operate briefly if the vehicle’s main electrical supply is lost. Replacing the SOS/emergency-call battery requires care: incorrect handling can disable the emergency system, trigger fault codes, or violate vehicle warranty/repair policies. Below is a detailed, practical guide covering identification, safety, step-by-step replacement, troubleshooting, and post-replacement checks.
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
Reconnect and reassemble
System initialization and checks
Step-by-step reality check:
The battery is inside the sealed plastic housing. You have two options:
Inside, you will see a small circuit board and the battery—often wrapped in foam or glued down.