awhile back i had a issue with my t/c selector going haywire and randomly being in diffrent gears some sugested to clean the grounds and well its now doing it again but flashing service 4x4 and the other day all the lights for the diffrent 4x4 gear sellections were out and the dic flashed service 4x4 but after it sat off for 30mins or so and i started it back up it was fine and back in 2wd.