We have a A30C that shifts into reverse on start up. When you turn the key off, but do not kill the engine it relaxes back into neutral. Because of this we believe it to be an electrical issue. It will still operate normally, i.e. shift into forward gears. We found a bad solenoid in the transmission, but it still does it. We bypassed the ECU and it stops. After replacing the ECU it still does it. We have gone through all the harnesses & connections, we check the shifter. We have gone through every test in the repair manual. We just picked it up from Volvo after 2 months. They rebuilt 1 harness ordered a ECU from Sweden and exhausted all their options. Their next step was a $ 40,000.00 trans. We are at a brick wall and hoping some one has some advice. PLEASE!?!?