What are the side effects of modifying a BMW key to a blade style?
3 Answers
It is basically the same as the original version, with no side effects. The following is a related introduction to the BMW blade key: Blade design: Many of BMW's new models feature keys with a blade design, which are finely crafted and eliminate the hassle of later modifications; Upgraded version: BMW's latest smart blade key is an upgrade from the original M3 color scheme. The key's shape is meticulously designed, focusing on hand grip comfort and ease of use while also exuding a sense of luxury and elegance. It has a moderate weight and a substantial feel. The exterior of the key is made of aluminum alloy and ABS materials, with a polished surface that provides an exceptionally smooth touch. A special coating is applied to effectively prevent paint chipping and oxidation.
I modified my BMW key to the blade style and found several annoying issues. First, the battery drains much faster—the original key lasted over a year, but this one barely makes it six months, making carrying a spare a hassle. The buttons also tend to get stuck, often failing to respond when unlocking or closing windows, especially in rainy weather. The signal weakened too, failing to unlock beyond 10 meters from the car. My biggest concern was improper modification triggering false alarms in the car’s system—once on the highway, it suddenly showed 'key not detected,' almost leaving me stranded outside a rest area. Before modifying, always check compatibility and choose a reliable brand.
From daily usage perspective, the battery life of modified blade keys is a real headache. My own key runs out of power every six months, requiring frequent replacements. The button sensitivity noticeably decreases too - sometimes it takes multiple presses to respond, especially during winter when tactile feedback worsens. The most annoying issue is signal interference; crowded supermarket parking lots with chaotic signals often render the key unresponsive for unlocking. Modifications might also compromise security systems - poor key adaptation could accidentally trigger anti-theft mechanisms. Recommendation: Purchase genuine accessories and have them professionally installed.
