How to Replace the Battery of Chang'an CS75 Car Key?
2 Answers
Replacing the battery of Chang'an CS75 car key involves the following steps: 1. Pry open the key remote shell; 2. Remove the old battery; 3. Install the new battery. The dimensions of the Chang'an CS75 are: length 4650 mm, width 1850 mm, height 1715 mm, with a wheelbase of 2700 mm, a fuel tank capacity of 58 liters, and a trunk capacity ranging from 520 to 1490 liters. The Chang'an CS75 is equipped with a 1.5T turbocharged engine, delivering a maximum power of 131 kW and a maximum torque of 265 Nm, with the maximum power speed at 5500 rpm. It is paired with a 6-speed manual transmission.
I've been driving the CS75 for several years and have replaced the key battery myself multiple times. Simply put, it's a three-step process. First, locate the small notch or gap near the buttons on the back of the key, then gently pry open the casing with a fingernail or coin—be careful not to use too much force to avoid damaging the plastic clips. Once opened, you'll see a small circular battery slot; remove the old battery with your fingernail. The battery model is usually CR2032, available at supermarkets or auto parts stores. Second, insert the new battery with the printed side facing up—otherwise, the key won't work. When closing the casing, listen for a click to confirm it's securely locked. Third, test the remote lock and unlock functions. If they don’t work, check the battery orientation. The whole process takes as little as five minutes, or up to ten minutes at most. It’s best to do this in a dry environment to avoid static electricity interfering with the circuit board. The battery typically lasts about two years, so it's wise to keep a few spare batteries in the car for emergencies. Additionally, you can watch disassembly videos online for extra confidence when performing the task.
