What Are the Hidden Functions of the BMW 5 Series Car Key?

[RiverRose]

BMW 5 Series car key has the following hidden functions: Press and hold the unlock button to lower all four windows simultaneously, and press and hold the lock button to raise all four windows at the same time. Steps to replace the key battery: 1. Press the switch on the back of the key to remove the mechanical key; 2. Insert the mechanical key into the slot next to the key and gently pry open the key cover; 3. Use a small flat-head screwdriver to remove the old battery; 4. Insert the new battery, ensuring the positive side faces up; 5. Reassemble the key. Taking the BMW 5 Series 2021 Modified 525Li Luxury Package as an example: This car is manufactured by BMW Brilliance, classified as a mid-to-large-sized sedan, with a gasoline energy type, a maximum power of 135kw, and a maximum torque of 290nm.