replace rear door shocks. the two rods along the sides.
the struts are probably bad and need to be replaced. you can get them at almost any auto parts stores
Good Chance this is caused by a faulty O2 Sensor. I had the engine light stuck on in my 2002 Montana and replaced rear O2 sensor and it turned it off.
Day time running lights?
Inside your rear door, are 2 "Stay Assemblies" or "Shock Absorbers". One or both have lost the charge of hydraulic fluid. You need to replace your defective stay assembly. They are available at your Honda dealer for about $50 each.
Replace the small looking shocks. That's what holds the door up.
The wet floor on the passenger side of your 2004 Pontiac Montana could be due to a clogged or damaged drain from the windshield or sunroof, allowing water to leak into the cabin. It may also be a result of a malfunctioning heater core, which can cause coolant to leak into the passenger area. Additionally, worn or damaged door seals could allow rainwater to enter the vehicle. Inspecting these areas can help identify the source of the moisture.
It needs to be Re-Set.. Most places can do it for no cost. takes less than 10 seconds.
you need to change the window regulator
door switch is bad or dirty try spraying with wd40 or replaceing.
If the rear passenger door on your Lexus LS 400 won't stay closed, it could be due to a faulty door latch mechanism or misalignment of the door itself. Additionally, worn-out weather stripping or a damaged striker plate may prevent proper sealing. Inspecting these components can help identify the issue; lubrication or replacement of parts may be necessary to resolve it.
If the liftgate will not stay up when you open it, you need to replace the two props ( they look like little shocks ).
The problem is that your door locks / latches are sticking. Spray some WD-40 on all the door jams/locks including the rear door hatch. The problem will stop.