Many vehicle owners do not realize how (directly and indirectly) valuable doorjambs are to maintaining the aesthetic appeal of their car.  This viewpoint is not only from the sight of opening your car door but the hidden value of it as a tool in detailing.  This hidden value can also include the rear trunk area painted surfaces.  Many times when we are detailing we are leaning over this area or have chords and tools around us.  So much of the damage, chips and scratches come from brushing up or colliding with the painted surfaces while around the interior of a car.

The first piece of advice I can provide is to have AWARENESS.  Being mindful of where you step, what you have in your hand, and what you are dragging.  This is a great first step in being more careful.  Many people do not think or put critical thought into what they are doing around their car on a daily basis.

The second step for people reaching around or cleaning their car is to place a microfiber towel by the entrance for insurance purposes.

This is not a license to be reckless.  But it can reduce some potential damage.

As an added way to protect, Kospec Designs makes some microfiber sleeves to stop damage just like this. They have options for your vacuum hoses, power cords, even air hoses.

Another tip is when you are vacuuming (even with a microfiber sleeve or towel on a door jamb, place the chord between your legs.

Treat paint like paint, seriously.  Use a waterless wash product at least.

Also for those who (as you should) take measurements, this is a good way to analyze how much clear coat is in your paint.  Below is a paint thickness gauge.  Many people scoff at the notion of using one due to it only showing the total thickness build, not specifically the clear layer that you are polishing.  I will mention when doorjambs are painted, they typically receive the least amount of clear.  Measuring the clear from the doorjambs is a good way to get a better idea of when to stop polishing.