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Frequently asked questions about cars and motorcycles

Fuel cap of the Seat Leon III that also opens when the car is locked

Model: Seat Leon 5F, MK 3 - Years: 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Part: Fuel cap

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In this video, we see a problem that occurred on this Seat Leon III: the fuel cap remained open despite the car being locked. We start by applying some WD-40 on the locking button, but unfortunately it didn't work, so it was necessary to replace the entire piece, which can be found, for example, on auto-doc with the code PR15-01074 at a price of 34.49 euros + 9.90 euros for shipping.

Unfortunately, to remove the actuator, it is necessary to dismantle a large part of the trunk, and the outer part of the fuel tank frame: in fact, the actuator is located inside these two components. Replacing it is simple, just disconnect the electrical connector and replace it with the new one. Then we just have to reassemble everything.


Posted on 4 November 2025 by ScegliAuto


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How to open the boot if it is stuck on a Mercedes B-Class?

On the Mercedes B-Class, the boot may become stuck, possibly due to a problem with the control button or the lock actuator. In this case, perform the emergency opening by following the simple procedure shown in this tutorial. First, unlock the locks with the remote control, then open the rear doors and, by operating the indicated lever, lower the backrest of the seat. Next, go inside the boot, locate the indicated gap, and manually unlock the lock using a small screwdriver.

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by ScegliAuto

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