Peugeot 2008 Sos Battery Replacement May 2026
1. Isolate car battery (- terminal)
2. Remove glovebox
3. Unscrew and open telematic module
4. Note polarity & unplug old battery
5. Fit new battery (same voltage & chemistry)
6. Reassemble and reconnect
7. Start car – warning should clear within 2 cycles
Would you like a link to a video tutorial for your specific Peugeot 2008 year? Just provide the year and market (EU/UK).
The Peugeot 2008's emergency call system, or Peugeot Connect SOS, is a vital safety feature designed to automatically contact emergency services in the event of an accident. However, many owners eventually encounter a "Emergency Call System Fault" warning, which is most often caused by a depleted internal backup battery. Understanding the SOS Battery System
Unlike the main 12V engine battery, the SOS system uses a small backup battery to ensure it can function even if the vehicle’s primary power is cut during a collision.
Lifespan: These batteries typically last between 4 to 8 years.
Symptoms of Failure: An orange LED blinking for several minutes after starting, a persistent red light on the SOS button, or a dashboard warning message stating "Emergency Call System Fault". Location of the SOS Battery
Finding the SOS battery can be tricky because it is not located in the engine bay. Depending on your Peugeot 2008's production year and trim, it is usually found in one of two places:
Behind the Dashboard: Often located within the Autonomous Telematics Box (ATB) near the steering column.
Overhead Console: In some newer models, it is located behind the interior lighting panel or near the roof-mounted emergency call module. How to Replace the SOS Battery
Replacing this battery is more complex than a standard car battery change and may require removing interior trim panels.
Preparation: 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.
Access the Module: Carefully unclip the dashboard lower panels or the overhead console using a plastic trim tool to avoid damaging the clips.
Replace the Battery: Once the telematics box is visible, open the battery compartment. The battery is usually a small lithium-ion pack. Replace it with the exact type specified by Peugeot.
Testing & Reset: After installation, the warning light may clear automatically after a few driving cycles, though some models require an OBD-II diagnostic tool to reset the fault code. Replacement Costs
DIY Cost: Purchasing the backup battery from a parts supplier or dealer like WJ King typically costs between $60 and $80.
Professional Cost: Because access can be labor-intensive (sometimes requiring dashboard disassembly), dealerships may charge between $200 and $600 for parts and labor.
For safety and proper handling of the telematics system, consult a qualified mechanic or your local Peugeot service center if you are uncomfortable removing interior trim.
Are you currently seeing a flashing red light or a dashboard message for this fault? PEUGEOT CONNECTED SERVICES. WJ KING PEUGEOT
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. peugeot 2008 sos battery replacement
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
Peugeot 2008 Connect SOS system acts as a built-in lifeguard, using an integrated SIM card to automatically alert emergency services with your GPS location if airbags deploy. If you see a flashing red light or an "Emergency Call System Fault" message, it usually means the dedicated backup battery inside the telematics module is failing. Key Details for SOS Battery Replacement : The SOS backup battery is typically housed within the autonomous telematics box
, which is located under the dashboard near the steering column or behind the overhead console. The Lifespan : These batteries are designed for about eight years of use, after which capacity can drop by 75%. The "Red Light" Warning
: A red or flashing light on the SOS button is the car's way of telling you the backup power is insufficient to maintain a call for more than five minutes. Replacement Complexity
: Unlike the main 12V car battery under the bonnet, replacing the SOS battery often involves removing interior panels or parts of the dashboard. Fun Facts & Practical Tips Independent Power
: The system has its own battery so it can still call for help even if the main car battery is destroyed in a crash. Automatic Deactivation : Peugeot's SOS service is typically active for
from the first registration. After this, the service may be permanently deactivated, which might also cause the SOS LED to blink for a few minutes upon startup. Accidental Presses
: 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 —
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
Most Peugeot 2008 owners encounter battery issues after 4 to 6 years of vehicle use. Watch for these red flags: Would you like a link to a video
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.
💡 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
After replacing the battery, you must clear the fault code from the car's computer system to turn off the dashboard warning light.
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.
Replacing the SOS (Emergency Call) backup battery in a Peugeot 2008
is a specific task required when the system displays a "SOS Limited Functionality" warning or the button flashes orange/red. This battery ensures the car can still call emergency services even if the main vehicle battery is destroyed in a collision. 1. Battery Location & Diagnosis After replacing the battery, you must clear the
The Warning: A solid or flashing orange/red light on the SOS button typically indicates the internal backup battery is weak or has failed.
The Component: The battery is housed inside the Autonomous Telematics Box (ATB) or Independent Telematic Unit.
Location: In the Peugeot 2008 (especially 2019+ models), this unit is typically found behind the dashboard, often near the steering column or behind the glovebox. Some variants may house it near the overhead console. 2. Required Tools and Parts
Part: Use only the Peugeot-authorized rechargeable backup battery (specific part numbers vary by model year, so confirm with a Peugeot Specialist). Tools:
Plastic trim removal tools (to avoid damaging the dashboard). Socket set (10mm for main battery terminal removal).
Torx screwdrivers (usually T20) for dashboard panel removal. 3. Replacement Procedure
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.
Safety First: 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.
Access the Unit: Carefully remove the trim panels under the steering column or behind the glovebox to locate the Telematics Box.
Extract the Unit: You may need to unscrew or unclip the module to reach the small battery compartment on its side.
Swap the Battery: Open the battery cover on the unit, disconnect the small wiring plug, and replace it with the new cell.
Reassemble: Secure the module and reinstall the dashboard trim.
Reset the System: Reconnect the main 12V battery. In many cases, the "SOS" warning will not disappear until you perform a "TCU back-up battery test" using a diagnostic tool like DiagBox to tell the car the battery has been replaced. 4. Why It Fails
Age: These batteries typically have an "authorised loss" of capacity after 8 years, but many fail after 4–5 years.
Lack of Use: If the car is not driven regularly, the backup battery may not receive enough charge from the main system to stay healthy.
If you are uncomfortable with dashboard removal, many owners prefer visiting a Certified Dealership as they have the specific software required to register the new battery to the car's computer. Where is the battery for the SOS button? just need to know
Here’s a step-by-step guide for replacing the SOS backup battery in a Peugeot 2008 (typically 2016–2020, second generation may vary slightly). This battery powers the emergency call system (eCall) in case the main car battery fails.
Warning: The SOS module is often connected to the airbag system. Disconnect the car’s negative battery terminal and wait 10–15 minutes before starting.