I had concluded i had a faulty ESC, having checked battery voltage, replaced handset batteries and restored handset to factory settings. So just to make sure i used my VXL3s from my Stampede in my MERV and it has the same problem!?
The problem is the ESC entering LVC (flashing slow red). As i bought this car busted its harder to track fault because i don't know what was working in the first place.