ther are a couple of thing to do first start the engine and turn the steering wheel from full left to full right as fast as you can, do it several times,this should reset the lights, after that turn off the engine and turn the key on, leave the key on engine off for 5 minutes, turn it off and restart, it should now accellerate fine. als if you are using an exide battery i strongly recomment to get either an original one ar at the veryleat an interstate brand, i have had several ML's and others come in to our shop and the cheapo batteries have created havoc on the electrical systems. let me know how it goes. send email if you want