2018-2022 Honda Odyssey | 5 Door ELITE (10AT), 5 Door EX, 5 Door EX (10AT), 5 Door EX-L, 5 Door EX-L (10AT), 5 Door LX, 5 Door LX (10AT), 5 Door Touring (10AT) | KA 9AT, KA XAT
Q: How do you disconnect and replace the ignition switch and key lock cylinder on Honda Odyssey?
A: Disconnect the cable from the negative battery terminal and wait at least three minutes before proceeding. Remove the knee bolster and the upper and lower steering column covers. Detach the driver's side fuse and relay box. Disconnect the ignition switch electrical connector from the fuse and relay box. Remove the ignition switch mounting screws and take out the switch. Installation is the reverse of removal. When finished, reconnect the cable to the negative battery terminal and verify that the ignition switch operates correctly in the LOCK, ACC, ON, and START positions. The lock cylinder cannot be replaced by itself; the entire housing must be replaced. Remove the shear-head bolts, take off the bracket, and detach the ignition Lock Cylinder housing from the steering column. Shear-head bolt removal can be accomplished by drilling a hole in the center of each bolt and unscrewing them with a screw extractor. Installation is the reverse of removal, tightening the ignition Lock Cylinder housing bolts until the hex heads break off. Reconnect the cable to the negative battery terminal and verify that the ignition Lock Cylinder works correctly.