Hi I have a auto clk200 2000 I drive it and every now and then it loses power while I'm driving hardly no power at all it chugs along for a bit and the problem goes and also while it's happening a triangle alert signal comes up then bas esp also yesterday it done it after I got it washed and I noticed on the back alloys there was white dust on them after it had happened I'm so scared it going too do it as I go round a round about and gonna have a accident anyone know what this could be thankyou in advance