Peugeot 2008 Sos Battery Replacement ^hot^ May 2026

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.

How to identify the SOS unit and battery

• Location: In most Peugeot 2008 model years the SOS/telematics module is located in the roof/headliner area (near interior lights), in the overhead console, or behind trim near the A-pillar. Exact location varies by trim and production year.
• Appearance: The SOS module is typically a small plastic box (often white or grey) with wiring harness connectors and sometimes an external antenna connector. It may be labeled with “SOS”, “eCall”, or a telematics part number.
• Battery type: The internal backup cell is usually a small rechargeable coin or sub-C style battery (manufacturer-specific). Some eCall modules use a sealed internal battery not intended for user replacement.

Cons & Warnings

• High risk of breaking trim clips.
• Soldering required in most cases – not plug-and-play.
• Some aftermarket batteries are too thick for the housing.
• If you mess up, the entire overhead unit can cost $200+ to replace.

Tools and materials

• Torx and Phillips screwdrivers (common sizes: T20/T25)
• Trim removal tools (plastic)
• Multimeter (12 V and continuity checks)
• Replacement battery or replacement telematics module (OEM part recommended)
• Service manual or wiring diagram for your specific year/model (recommended)
• Disposable gloves and ESD wrist strap (optional)

Step 2: Remove the SOS Module

1. Once the overhead panel is off, locate the small black box with wiring harnesses.
2. Disconnect the electrical connectors by pressing the locking tabs and gently pulling.
3. Remove the screws holding the module to the roof (usually Torx T20).
4. Carefully lower the module.

Step 3: Replace the Battery

1. Inside the unit, look for a round coin cell battery holder on the circuit board.
2. Note the orientation (which side is Positive +). Take a photo with your phone if unsure.
3. Remove the old battery (usually a CR2032 3V lithium cell).
4. Insert the new battery in the correct orientation.

Q: My Peugeot 2008 is from 2022. Does it have a replaceable battery?

A: Yes, but it may be a rechargeable battery integrated into the TCU. Some newer models require dealer reprogramming after replacement. Consult a specialist. peugeot 2008 sos battery replacement