Sanwa glitching

[Tayter]

Dear All

Had an issue with my Sanwa Mt4s and the rx 462 on Sunday. Would switch on tranny ,then car and the steering would work immediately but had to wait 2 maybe 3 minutes before the ESC would power the car. Once running no issues at all. The electrics are all hobbyking motor and ESC, and have run fault free for the last 3 years in three cars.

Anyone shed any light on what the issue can be. Going to try and change the sensor cable, try recalibration of the tranny, but it causing a few head scratches, HELP. Google hasn't really helped me

Steve