Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to flush the brake system on a 2003 vw jetta tdi [title] Drive the vehicle front wheels onto ramps. [title] Place the gear selector in " park " or " 1st " gear. [title] Place wheel chocks behind the rear wheels.

Ending1: [title] Place an oil drain pan under the passenger-side rear wheel. [title] Engage the hood lever in the cabin compartment. Ending2: [title] Place the air drain cap on top of wheel chocks. [title] Use air cooler valves to remove air from the gaskets. Ending3: [step] Apply leather padding to the wheel chocks. [title] Allow the vehicle to stop on turns. Ending4: [title] Place the wheel chocks beside the exhaust fan. [title] Attach brake clips, if necessary to secure them in place.

Answer format: ending1/ending2/ending3/ending4