Peugeot 2008 - Sos Battery Replacement [work]

Important Note: The "SOS Battery" warning usually refers to the backup battery located inside the Peugeot SOS Telematics Unit (localization unit). This battery is designed to allow the emergency call system to function even if the car's main battery is severed in a crash.

Troubleshooting common issues

• After replacement, SOS light or warning persists:
  • Confirm connectors are fully seated and no pins bent.
  • Use a diagnostic scanner to read fault codes and follow recommended fixes.
  • If the module was replaced, it may need coding to the vehicle’s VIN.
• Module not powering:
  • Check fuses related to interior electronics/telematics.
  • Check main battery voltage and ground continuity.
• SOS call test not available:
  • Many manufacturers disable live SOS calls for safety; use diagnostic self-test or consult dealer.

1. Why Replace It?

• Warning Light: A message like "SOS system faulty" appears on the dashboard.
• Dead Battery: The internal rechargeable battery (often Ni-MH or Li-ion) inside the telematic module (Connected Box) fails after 3-6 years.
• System Failure: The emergency call button may not work, and the system will fail its self-check.

Step 3: Access the Internal Battery

The battery is inside the sealed plastic housing. You have two options:

• Option A (Easiest): Some modules have a small removable panel. Look for a tiny screw or clip.
• Option B (Most common): You must split the module case. Use a small flathead screwdriver to gently separate the plastic clips around the edge. Work slowly to avoid breaking the plastic.

Inside, you will see a small circuit board and the battery—often wrapped in foam or glued down.

8. Printable Quick Reference

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).

SOS battery (also known as the "emergency call" or "backup" battery) in a Peugeot 2008

is a critical component of the Peugeot Connect SOS & Assistance system. This internal battery powers the vehicle's telematics unit to ensure emergency services can be reached even if the car's main 12V battery is disconnected or damaged during an accident. Key System Details

: Powers the manual or automatic (airbag-triggered) emergency call function. Service Life : Designed to last roughly

with an authorized capacity loss of up to 75%. Some specialized garages note that failure can occur earlier if the battery cannot power the module for more than five minutes. Warning Indicators Red Flashing/Solid Light

: Indicates a fault with the emergency system, often a flat or faulty internal battery. Orange Blinking Light

: On newer models, this may indicate the 10-year SOS service subscription has expired. Battery Location & Access

Unlike the main vehicle battery under the hood, the SOS battery is located inside the Autonomous Telematics Box (BTA)

: Typically found behind the dashboard, near the steering column, or behind the instrument cluster. Access Difficulty

: Replacing this battery is considered a "heavy" task, often requiring the removal of dashboard panels or the instrument display. Replacement Procedure

Because the SOS system is a safety-critical component, it is highly recommended to have the replacement performed by a Peugeot Authorized Repairer or a qualified technician.

: A diagnostic scanner should be used to confirm the "Internal Battery Fault" (e.g., fault code FD87) before dismantling the dash. Safety Precautions

: Disconnect the vehicle’s main 12V battery before beginning work on the telematics module. Dismantling

: Remove the trim below the dashboard display or the display unit itself to reach the BTA module. peugeot 2008 sos battery replacement

: Replace the internal cell (typically a specialized Ni-MH or Li-ion pack, not a standard AA battery) with the specific part number provided by Peugeot. Software Update

: Professionals often carry out a software update on the telematics module simultaneously to ensure system stability. Estimated Costs

While individual battery cells can sometimes be found online for moderate prices, the labor-intensive nature of the dashboard removal means dealer or garage costs often range from £150 to £300 ($190 to $380) including parts and labor. near you to handle this replacement? 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

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 Important Note: The "SOS Battery" warning usually refers

💡 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

The story of replacing a Peugeot 2008 SOS battery often starts with a mysterious blinking red or orange light

on the dashboard or overhead console, signaling a fault in the emergency call system

. Unlike the main car battery, this small backup battery is part of the Autonomous Telematics Box

, designed to power emergency calls even if the vehicle's main power fails during an accident. French Car Forum The Replacement "Adventure"

Replacing this battery is famously more complex than a standard battery swap: Hidden Location

: In many Peugeot 2008 models, the SOS battery is tucked deep under the dashboard near the steering column or within the overhead console The "Dashboard" Challenge : Some owners have been told by mechanics that the entire dashboard

needs to be removed to access the telematic unit, making a small battery replacement a labor-intensive project. System Lifespan

: These batteries typically have an autonomy of about one year without loss of capacity and are expected to lose roughly 75% of their power after eight years Warning Signs

: A flashing orange light often means the battery is getting weak and not holding a full charge, while a solid red light might indicate a permanent fault in the telematic unit itself. French Car Forum Key Tips for Owners Diagnostic First

: Before tearing into the dash, experts suggest checking for specific fault codes (like

) at a workshop to confirm if it’s just the battery or the entire telematic unit that has failed. Safety Precaution disconnect the main 12V vehicle battery

before attempting to access the SOS module to avoid shorting out sensitive electronics. Professional Help After replacement, SOS light or warning persists:

: Because of the specialized location and the need to reset system faults, many owners prefer using a qualified Peugeot workshop

Are you seeing a specific warning light color on your SOS button right now? SOS Light Flashing Orange - French Car Forum 20 May 2023 —

Title: "Stay Safe on the Road: A Step-by-Step Guide to Replacing the SOS Battery in Your Peugeot 2008"

Introduction: The Peugeot 2008 is a popular compact SUV known for its stylish design, comfortable ride, and advanced safety features. One of the critical safety features in the Peugeot 2008 is the SOS battery, which powers the vehicle's emergency call system. However, like all batteries, the SOS battery in your Peugeot 2008 has a limited lifespan and will eventually need to be replaced. In this feature, we'll walk you through the process of replacing the SOS battery in your Peugeot 2008, so you can stay safe on the road.

What is the SOS Battery in Peugeot 2008? The SOS battery in your Peugeot 2008 is a small battery that powers the vehicle's emergency call system, also known as the eCall system. This system automatically sends a distress signal to emergency services in the event of a serious accident, providing your location and other critical information to responders.

Why Replace the SOS Battery? The SOS battery in your Peugeot 2008 is designed to last for several years, but it will eventually drain and need to be replaced. If the SOS battery is not replaced, the eCall system may not function properly, which could put you and your passengers at risk in the event of an emergency.

Tools and Materials Needed: To replace the SOS battery in your Peugeot 2008, you'll need the following tools and materials:

• A replacement SOS battery (available from Peugeot dealerships or online)
• A small screwdriver (preferably a Torx screwdriver)
• A pair of gloves (to protect your hands from any sharp edges or electrical components)

Step-by-Step Replacement Guide: Here's a step-by-step guide to replacing the SOS battery in your Peugeot 2008:

1. Locate the SOS Battery: The SOS battery is usually located in the dashboard of your Peugeot 2008, near the center console. You may need to consult your owner's manual or look for a small compartment with a battery icon on it.
2. Disconnect the Battery: Use a small screwdriver to pry open the compartment and access the SOS battery. Gently pull out the battery connector and disconnect it from the battery.
3. Remove the Old Battery: Carefully pull out the old SOS battery from its holder. Take note of the battery's orientation and position, as you'll need to install the new battery in the same way.
4. Install the New Battery: Insert the new SOS battery into its holder, making sure it's securely seated and oriented correctly.
5. Reconnect the Battery: Connect the battery connector to the new SOS battery, making sure it's securely fastened.
6. Test the eCall System: Turn on your Peugeot 2008's ignition and test the eCall system to ensure it's functioning properly.

Tips and Precautions: When replacing the SOS battery in your Peugeot 2008, make sure to follow these tips and precautions:

• Always wear gloves when working with electrical components to protect your hands from any sharp edges or electrical shocks.
• Use a Torx screwdriver to avoid damaging the compartment or the battery connector.
• Make sure to dispose of the old SOS battery properly, as it's a hazardous waste.
• If you're not comfortable replacing the SOS battery yourself, consult a Peugeot dealership or a qualified mechanic.

Conclusion: Replacing the SOS battery in your Peugeot 2008 is a relatively simple process that can be done at home with a few tools and some basic knowledge. By following this guide, you can ensure that your vehicle's emergency call system continues to function properly, keeping you and your passengers safe on the road.

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.

Procedure

2. What Battery Do You Need?

There is no universal battery – you must identify your car’s module.

| Model Year | Module Type | Typical Battery | |---|---|---| | 2013–2016 | Peugeot Connect Box (DG4) | 3.6V Ni-MH (e.g., Varta V6HR or similar 3.6V 600mAh) | | 2017–2020 (First facelift) | Connected Box (NAC/Wave 2) | 3.7V Li-ion (e.g., 302541224P, 1S1P 500mAh) | | 2020+ (Second facelift / New 2008) | Connected Box (4G) | Often built-in non-user replaceable – dealer only |

✅ Best practice: Remove the module first and check the printed part number on the old battery.