How to Replace the Remote Battery for Mazda6?
2 Answers
Mazda6 key battery replacement steps are as follows: 1. Open the key head and look inside the folding key slot, paying attention to the black square located slightly to the right of the center - this is the lock for the upper part of the key. 2. Find a suitable tool and gently press against that point. 3. While pressing, pull apart the upper part of the key to successfully separate it. 4. Observe the cross-section structure, noting there's a long groove at the center top of the key cross-section. 5. Insert a flathead screwdriver into the groove and twist it. 6. After successful separation, remove the old battery and install the new one, being careful not to reverse the polarity. The battery model is CR1620.
I've replaced the remote battery for my Mazda6 several times and found it quite easy. Usually, there's a gap on the back of the key. Just use a small flat-head screwdriver to gently pry it open—don't use too much force to avoid damaging the plastic casing. Inside, you'll find a round coin-cell battery, typically the CR2032 model, which you can buy new at a supermarket or electronics store. When removing the old battery, note the positive and negative orientation, and install the new one the same way—usually with the flat positive side facing up. Finally, snap the cover back on and test the remote by pressing the unlock button a few times. The battery usually lasts 2-3 years, but if you use it frequently (e.g., locking the car often), it might drain in a year. I recommend buying branded batteries—they're affordable, costing just a few dollars. DIY replacement saves money and time, but avoid poking around carelessly to prevent circuit issues.
