Due to the unqualified fastening bolts for the front bracket of triantebrachia, when it is in extreme conditions, the fastening bolts might fracture, leading to the unstable, vibrating or off-track car running. Safety loophole like these will impact the operation, thus, DPCA company decided to replace new fastening bolts for calling-back Peugeot Class 408 for free, by applying new tightening technology to avoid the safety problems.