Hi, hope you can help me. When I was driving the other night the VTM-4 and check engine light went on at the same time. (Honda Pilot 2004). according to manual, VTM-4 has to do with 4 WD- when got back into car to drive home, VTM-4 light off, but check engine light remained on. Took to dealer, VTM-4 remained off the whole drive- diagnostic found problem with idle valve-400.00 to replace. When I asked why the other light (VTM-4) went on, they said that the valve probably whacking out other lights to go on...doesn't make sense to me-opting to have them reset check engine light to see what happens. Told not dangerous at this time to leave valve as is... what's your opinion? Make sense to you? -thanks