1620 Battery you need - amzn.to/4co2mSs
Here is a quick video on how to change the weak / dead battery in your Renault key fob. The process will require a 3.0 philips screwdriver and a small flat tip screwdriver. Use the philips screwdriver to remove the screw in the back. Then use the flat tip screwdriver and pry the back portion up. That will split the two halves. Then use the small screwdriver to pop out the 1620 battery. Replace the new 1620 battery + facing upward. Clip it all back together and look for your red light. You're all set! I hope you found the video helpful.
RENAULT SCENIC CLIO LAGUNA KANGOO MEGANE REMOTE CENTRAL LOCKING KEY FOB
1 BUTTON KEY CASE FOR RENAULT CLIO KANGOO MEGANE TRAFIC KOLEOS TC REMOTE FOB