We have a transformed car, a Bentley, which no longer has a motorized sunroof. The blind has also gone. However the car diagnostics exhibits a fault on the related, non-present devices and motors. We are using ODIS 5.0.6 to read from the car computer diagnostics but are lacking experience in that field. Is there a way I can remove the options from the car computer without having to keep the steppers as dummies?
This may or may not apply to the Bentley
In general, stock ECU's are not programmable from an options standpoint. Writing to the ECU is not allowed, they are read only. Aftermarket ECU's take output from sensors and frequently stand in serial to the stock ECU so the aftermarket can modify information and act as a proxy to the sensor, essentially emulating the sensor and sending the ECU information that will thereby increase fuel from an injector and what not to increase HP, as an example.
Clearly, there is a safety issue allowing consumers and/or mechanics to modify the ECU as it may control factors that are related to a safe driving experience. The associated liability for a manufacturer is simply to high for a manufacturer to be motivated to risk allowing these modifications.
I know of no stock ECU that allows a write, even for a configuration file (which isn't to say that this doesn't exist). Modifying a field or 'feature' for an ECU is also something I have not heard of.
I do not see the feature you are wanting to disable regarding the monitoring of the sunroof motor having an impact on the operation of motorized mechanical inputs from the ECU coming into play.
I have taken ECU's for BMW and Mercedes and put them into vehicles that don't have the ancillary features of the previous vehicle. Such as a sunroof,etc. I have had no issues with this.
Again, I have no knowledge about the Bentley configuration specifically.