Example part number search:
A: Yes, but it may be a rechargeable battery integrated into the TCU. Some newer models require dealer reprogramming after replacement. Consult a specialist.
If your key fob range is decreasing or the car displays "Key battery low," this is a simple DIY fix.
Battery Type: Usually CR2032 (3V Lithium coin cell).
Steps:
This battery is not under the hood. It is typically located in a black box behind the dashboard on the passenger side (often behind the glovebox or near the A-pillar).
If you own a Peugeot 2008, you may eventually encounter a warning light or message regarding your battery. However, the term "battery replacement" can refer to two very different things:
This guide covers all three, with a specific focus on the often-misunderstood SOS battery, which is a common point of failure in Peugeot vehicles.
If you want, tell me your Peugeot 2008 model year and whether you can access the overhead console (or send a photo of the module area) and I’ll provide a model-specific removal and part-identification walkthrough.
Replacing the SOS emergency call battery in a Peugeot 2008 is a specialized task distinct from changing the main vehicle battery. While the main car battery is easily accessible under the hood, the SOS backup battery (part of the Peugeot Connect SOS & Assistance system) is typically tucked away within the dashboard or overhead console to ensure it remains functional during a serious collision. Understanding the Peugeot SOS System
The SOS system is designed to provide emergency assistance even if the car's main battery is disconnected or damaged in an accident. peugeot 2008 sos battery replacement
The SOS Battery: This is a small, dedicated backup battery that powers the telematics unit. It generally needs replacement every 4 to 5 years.
Warning Signs: You may need a replacement if you see an "Emergency Call System Fault" message on the dashboard, if the SOS button flashes orange or red after starting the car, or if it remains constantly illuminated.
Placement: In most Peugeot 2008 models, this battery is located inside the Telematic Unit (BTA/BTA2), which is often found behind the dashboard's head unit (radio) or near the glovebox area. Step-by-Step Replacement Guide
Because this involves sensitive electronics, many owners prefer to visit a local Peugeot dealer to ensure the system is properly re-coded. If you are comfortable with DIY:
Safety First: Ensure the vehicle is off. For some models, it is recommended to disconnect the main car battery negative terminal to avoid electrical shorts.
Access the Module: Use trim removal tools to carefully remove the plastic panels around the center console or radio head unit. You may need Torx screwdrivers to unscrew the telematics box.
Locate the Battery Compartment: The backup battery is usually a small, rectangular lithium-ion pack housed within a clip-on compartment on the module.
Exchange the Battery: Unplug the small wiring harness connecting the old battery and replace it with a genuine Peugeot replacement part to ensure compatibility.
Reassemble and Test: Reinstall the module and panels. Turn on the ignition; the warning light should disappear after a self-test period. Technical Specifications for Main Battery
If your "SOS fault" is actually related to low voltage from the vehicle's primary power source, you may need to replace the main battery instead. Standard Peugeot 2008 Spec Replacement Requirement Main Battery 12V L2/L3 EFB or AGM (for Start/Stop) 10mm socket wrench, terminal sanding SOS Battery Specific Peugeot Backup Lithium Pack Trim tools, potential software reset Example part number search: A: Yes, but it
For official parts and certified assistance, you can browse Peugeot's Official Parts and Service page or consult reviewers on forums like Peugeot Forums for model-specific advice.
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
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. This battery is not under the hood
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
Important Disclaimer: This information is for general guidance. Vehicle electronics can vary by year (especially pre-2017 vs. post-2017 models). If unsure, consult a professional. The SOS system is safety-related; ensure correct battery type is used.