What to do when the Roewe RX3 key runs out of battery?

[WalterDella]

Find the spare key, then replace the battery in the main key. Open the key ring buckle, take out the mechanical key, and pry open the lock hole cover next to the driver's door handle. Open the car door, place the key on the induction point inside the armrest box to start the vehicle. Battery life may vary, generally around 2 years, so pay attention to regularly replacing the smart key battery. When the smart key runs out of battery, it's a gradual process. Before the key fails to unlock the door, the smart key will start malfunctioning, which is when you should promptly replace the battery.

[StOlive]

Running into a dead battery in the Roewe RX3 key fob is actually quite common. I've experienced it myself—once I was in such a hurry that I almost got locked out. Later, I figured out a set of solutions: first, locate the hidden release button on the key fob, press it to pop out the mechanical key blade, then insert it into the concealed keyhole on the driver's door handle to unlock the car. After getting in, if the push-to-start doesn’t work, press the entire key fob against the induction area under the steering wheel (marked with a key symbol), hold the brake, and press the ignition button to start the engine. The key step is replacing the battery—it’s a CR2032, which costs about 10 yuan at an electronics store. When replacing, use a coin to pry open the back cover, making sure the battery’s positive side faces up to avoid reverse installation. For those less handy, I’d recommend buying an online battery kit with installation tools—keeping a spare in the car is always a smart move.

[JosiahAnn]

I've dealt with this issue twice, and it's not as troublesome as you might think. First, use your fingernail to pry open the slot on the back of the key, then pull out the slender metal key blade. Align it with the square cover under the driver's side door handle and pry it open to reveal the lock cylinder. After opening the door, the dashboard will light up with an anti-theft warning—don't panic. Place the entire key fob into the cup holder in front of the gear shift (referred to as the emergency start area in the manual), press the brake, and start the engine immediately. When buying a battery, make sure it's the CR2032 model, which is available at most convenience stores. Be careful with the plastic clips on the back cover when replacing the battery, and remember to test the lock button after installation. By the way, the battery typically lasts about two years. If you notice the remote's range decreasing, it's time to replace it to avoid being caught off guard.

[DeWalker]

The mechanical key of the Roewe RX3 is hidden in the key fob when the battery is dead. Pry open the silver emblem at the end of the key to extract the key blade. The door lock cylinder is located under a small cover on the lower edge of the door handle. After entering the vehicle, try placing the key in the storage compartment on the right side of the center console, then press and hold the start button for three seconds while stepping on the brake to activate emergency mode. For battery replacement, use CR2032. The back cover can be pried open with a bank card. If you can't handle it yourself, go to an auto parts market where professionals can replace it for about 20 yuan and also help test the signal. It's recommended to clean the key contacts monthly with alcohol swabs to prevent poor contact and rapid battery drain.

[JohnLee]

I've helped my neighbor with this smart key power failure issue before. First, I taught him to pry open the hidden latch on the side of the key to find the folded metal key head for opening the door. When starting the car, we discovered a trick: press the key firmly against the push-to-start button, hold it there for five seconds like wireless phone charging, then press the brake to start. Use a CR2032 coin cell battery for replacement, and be careful not to displace the rubber sealing ring during the process. As a bonus tip, the vehicle's infotainment system can display key battery level warnings - it's located in the second-to-last option of the settings menu. If the key still malfunctions after battery replacement, it might be due to loose solder joints on the circuit board from previous drops, requiring professional repair.