How to Replace the Key Battery for Peugeot 408?
2 Answers
The steps to replace the key battery for Peugeot 408 are: 1. Remove the mechanical key and insert it into the hole; 2. Pry open the key, remove the old battery by opening the key cover, and install the new battery; 4. Close the car key cover and finally reinstall the mechanical key. The dimensions of the Peugeot 408 are: length 4750mm, width 1820mm, height 1488mm, with a wheelbase of 2730mm. The Peugeot 408 is equipped with a 1.2T turbocharged engine, delivering a maximum power of 100kW and a maximum torque of 230Nm, paired with a 6-speed dual-clutch transmission.
As an average driver, I change the battery in my Peugeot 408 key fob myself when it runs out of power. First, take out the key fob—there's a small notch on it. Use your fingernail or a small tool to gently pry open the casing, splitting it into two halves. Be careful not to use too much force to avoid damage. Inside, you'll find a coin-shaped CR2032 battery—make sure you get the right model. Before removing the old battery, note its orientation (usually positive side up). When inserting the new battery, align it properly and press lightly to secure it in place. Then, snap the casing halves back together, ensuring the clips lock firmly—give it a shake to check it doesn't feel loose. Keep spare batteries at home; the battery typically weakens after about a year. If the lock won't open or the buttons stop responding, it's time for a replacement. This method is quick and easy, saving you the hassle of queuing at a repair shop and spending extra money.
