How to Open and Replace the Battery in a Mitsubishi Car Key?
2 Answers
Owners need to prepare the replacement battery in advance and ensure it is the same model as the original battery when purchasing. Then, pop out the mechanical key, locate the clasp on the key casing, and remove the outer shell. After opening the key casing, remove the old button battery and replace it with a new one that meets the specifications. When installing the new battery, pay attention to the positive and negative poles. Do not reverse them, as the key will not function properly even after replacement.
As a Mitsubishi owner, I have plenty of experience replacing key fob batteries. The key usually consists of two halves with a seam along the side. Simply insert a coin or flathead screwdriver into the gap and gently pry it open. Avoid using excessive force to prevent scratching the casing. Inside, you'll find a small button battery - Mitsubishi commonly uses CR2032. Remove the old battery and insert the new one with the positive side (marked with a + sign) facing up. Installing it backward will make the buttons unresponsive. After reassembling the casing, test the lock button - a red light indicates successful operation. Since keys often get damp or compressed in bags (accelerating battery drain), I recommend checking the battery every 1-2 years. I keep a spare battery at home and replace it immediately when noticing reduced remote range. This DIY approach saves repair costs and prevents roadside inconveniences.
