Few vehicles wear their character as openly as the Jeep Wrangler, a removable-roof off-roader built for rough terrain and weekend trails. All that hard use means its onboard service systems regularly need attention once a job is finished. Topping up or draining the engine usually triggers the need for an oil service reset, the maintenance light comes on at set intervals and has to be cleared, and any tyre rotation or pressure change can require a TPMS reset. Because Jeep changed these procedures noticeably between the JK and JL chassis, we’ve grouped the guides by generation. Pick the Wrangler generation below that corresponds to your year to jump straight to the correct instructions.