Door shuts influence the impression of a complete clean because they are visible every time the vehicle is opened. They should be cleaned without flooding locks, connectors or the cabin.

Maintain seals carefully

Door seals are wiped clean and can receive a compatible maintenance product where appropriate. No dressing can guarantee that aged or damaged rubber will last several extra years.

Engine bays need controlled methods

Engine-bay cleaning requires a cool vehicle, identification of sensitive electrical or intake areas and restrained use of moisture. Pressure washing an unknown engine bay is not a general-purpose detailing step.

Leaks, damaged insulation or mechanical faults should be addressed by a technician rather than disguised with dressing.

The former mobile CarSpa service mentioned in the source is historical. Current engine-bay and mobile availability should be agreed directly with AVP.