Unplug and reinsert the harness plug of BMW 320i 15 left front door panel. Why does the button fail?

15 BMW 320i left front door panel harness plug pull-in button failed, because the throttle plug harness was loose, the idle speed was unstable, it was impossible to refuel, and the throttle failed.

Too dirty throttle or too much carbon deposit in fuel injector, gear start-up jitter, cold start and insufficient three-way catalytic temperature are the most common reasons for automobile jitter, because the gasoline adsorbed on carbon deposit after landing is sucked into the cylinder by the engine for combustion, and the combustible mixture of the engine is sometimes rare and sometimes thick.

Operation method:

1. First, there are two screws on the inner door panel, one at the groove of the door wrench, as shown in the following figure:

2. One is in the slot on the left side of the central control switch, as shown in the following figure:

3. After removing the two screws, take them out from several grooves on the lower edge of the door with a crew cut screwdriver, as shown in the following figure:

4. There are two such positions in the middle, as shown in the figure below:

5. After loosening the plastic buckle at the lower edge, you can lift the interior trim panel with both hands, as shown in the following figure:

6. Then pull it out and finish. As shown in the figure below: