Do it yourself
Frequently asked questions about cars and motorcycles

How to Replace the Key Battery on MG

Model: MG MG Various
Part: Key

Video tutorial

If the battery in your remote key is dead, you need to replace it. Below, we have summarised the main steps and operations to carry out for the replacement. First, take a sharp object to pry open the joint between the key and the cover.

Then, remove the cover and take out the internal circuit board; underneath, you will find the battery compartment that you can remove and replace with a new one. Reinsert the circuit board and close the cover, and the job is complete.


Updated on 5 June 2026 by ScegliAuto


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