When your 2022 BMW 5 Series automatic trunk closing malfunctions, the convenience feature that gently pulls and secures the trunk lid stops working. BMW's Soft Close Automatic system requires precise coordination between sensors, motors, and latches.
BMW's Automatic Trunk Close System
The 5 Series features Soft Close Automatic (SCA) that detects when the trunk is pushed to the first latch position and automatically pulls it fully closed. This is separate from the power open/close function—it specifically handles the final closing sequence.
Types of Closing Malfunctions
Malfunctions include: the soft close not engaging when trunk is pushed partway closed, the system pulling but not fully latching, grinding or unusual noises during close, very slow closing operation, or the trunk not sensing the initial catch position. Power liftgate models may also have issues with the powered closing motion.
Common Causes
Closing malfunctions result from: latch motor failure, position sensor issues, latch mechanism wear, low battery voltage affecting motor operation, wiring problems in the trunk lid, software glitches, or the initial catch mechanism not engaging properly. Cold weather can also affect operation.
Diagnostic Process
Push the trunk closed manually to verify it can latch mechanically. Listen for the soft close motor attempting to operate. Check battery voltage—BMW systems are voltage-sensitive. Use BMW ISTA to read specific fault codes in the soft close module. Note if the problem is consistent or intermittent.
Repair Solutions
Software reset may clear temporary glitches. Latch motor replacement addresses worn or failed close motors. Position sensor replacement if detection is faulty. Complete latch assembly replacement for comprehensive failures. Battery charging or replacement if voltage is low.