To know what specific service is needed, you'd need more context. This could come from:
* The owner's manual: This will have a scheduled maintenance guide outlining recommended services based on mileage or time.
* A warning light on the dashboard: A specific light (check engine, oil pressure, etc.) indicates a problem requiring attention.
* A mechanic's diagnosis: A professional inspection will pinpoint the issue and recommend necessary repairs.
* Noticeable problems with the car: Unusual noises, leaks, poor performance, etc., suggest the need for service.
In short, "perform service" is a generic phrase; you need more information to determine the exact nature of the required work on your Chrysler 300M.
