Where is the fuel pump module located in the Audi A4L?
2 Answers
The fuel pump module in the Audi A4L is located under the rear seat on the right side. Open the cover above the fuel pump under the seat. Introduction to the fuel pump: The fuel pump is a lightweight and compact pump, which can be categorized into inline, distributor, and unit types. The fuel pump requires a power source to operate, and its lower camshaft is driven by the engine crankshaft gear. Steps to replace the automotive fuel pump: First, pry off the fuel pump cover; disconnect the wiring harness plug; remove the two fuel lines; take off the sealing ring; remove the fuel pump assembly; detach the fuel float rod; remove the fuel pump chamber cover; detach the two lines of the fuel pump chamber cover; remove the fuel level sensor PCB board; detach the fuel float rod linkage arm; pull out the fuel pump core; remove and clean the fuel filter screen; check if the sensor contacts are functioning properly; install the new fuel pump and reassemble all the removed parts in order; start the engine and check the fuel gauge's working condition.
The fuel pump module of the Audi A4L is quite well hidden, located beneath the trunk floor. Specifically, you need to lift the bottom cover of the trunk, and on the right side near the fuel tank, you'll find a component covered by a black plastic box—that's the fuel pump control module. It's positioned close to the fuel tank to directly manage fuel supply, ensuring shorter wiring and higher efficiency. Last time I helped a friend inspect it, I noticed that some models secure the module with clips, while others use screws. Be careful not to break the clips during removal—it's best to have some spare clips on hand. Also, remember to disconnect the negative terminal of the battery first to prevent short circuits and potential damage to the circuitry. If you're unsure about the location, checking the parts diagram in the latter half of the owner's manual will give you a clearer visual reference.
