Bad Lower Control Arm or Track Control Arm Symptoms Explained What happens when lower arm failsTRACK CONTROL ARM FOR TOYOTA HIACE III BOX YH7 LH6 LH7 LH5 JAPANPARTS BS 269R. 2.4 D (LH5_, LH6_, LH7_, LH10_, LH11_). All tech data details in the listings description section are provided from official manufacturers‘ tech databases.