2004 Volvo S40 Key Fob Battery Replacement Instructions

Key fob allow easy access to your auto. Once the keyless entry remote battery is discharged you will not to be able open trunk or doors remotely. It's not complicated to replace the battery in your remote key fob, and it’s easier than you think. Everything you need is explained in this article.
What size battery does 2004 Volvo S40 keyless entry remote required
Don't forget before disassembly keyless entry remote check all that you need: flat head screwdriver and CR2032 battery.- 1xCR2032 battery
- flat head screwdriver
Step by step guide
A button cell battery installed in the your remote key fob. Delicately try to pry apart your fob with hands or flat head screwdriver. Change 1 CR2032 battery with flat head screwdriver.
Change old battery with new one CR2032. Every battery has a negative and positive side and if you put the wrong connector down, the charge cannot go into your circuit board and make it work. Check position on battery, by "+" mark.
When the new battery installed, check key fob by pressing buttons. If everything working fine, assemble your fob’s case in reverse order.
The last thing to do is put your cover back on fob. Delicately try to put the pieces in place by hands from top to bottom. Inspect your keyless entry remote case for gaps. If it is not tightly closed try to repeat last step.
How to change the battery video instruction
DIY Replace Volvo S40 C30 V50 Key Fob Battery on your Keyfob Transponder 2004-2012 CR2032
Still not working? Buy new one