Just looking for a quick answer. Would the EAS manual throw a service engine light, and is it a big problem, easily fixable? I just bought my 2000 RR 4.6 and it drove fine for two days without the light and just showed up along with the message.
Has the EAS manual been coming up since you bought the vehicle, or just now?
If it's been happening since you bought the vehicle, then chances are it's an override system which is fitted to stop the errors when a coil conversion is fitted.
If it and the engine light have just come one - then maybe there's something else happening.. the 'Service Engine' light is fitted in some markets to come on after a certain mileage, so you can prepare yourself to get raped at the dealers..
Most people either get that option switched off by removing the bulb from the instrument cluster. If it's the Check Engine Light, then that indicates there's something been logged by the engine ECU of severity enough for it to illuminate the Check Engine (or MIL as it's known in some places).