BYD F3/F6/Tang/Song/F0/M6/S6/G6 Brake Light Switch BYDF3-4134200 Original Replacement

This brake light switch is designed for BYD F3 (2005-2018), F6 (2008-2013), Tang (2015-2020), Song (2016-2020), F0 (2008-2015), M6 (2010-2017), S6 (2011-2016), and G6 (2011-2015) with 1.5L-2.0L engines. It activates the tail light signal when braking and interlocks the starting system to prevent inadvertent starts when not braking. OEM number BYDF3-4134200 for cross-reference. Replacement difficulty is low; typically just unplug the old switch and remove, installation requires no programming, but check brake pedal travel. As an OEM replacement, the switch uses high-temperature materials with a life of over 100,000 cycles, suitable for bulk purchasing for repair shops.