Do it yourself
Frequently asked questions about cars and motorcycles

Check the Operation of the Automatic Gearbox Solenoid

Model: Jeep Grand Cherokee WK2, MK 4 - Years 2010-2021
Part: Transmission

To perform this type of maintenance, you need appropriate diagnostic equipment, the wiring diagrams for the vehicle, and adequate experience: only if you have already dealt with certain fault scenarios can you consider tackling a problem like that of the automatic gearbox. On this vehicle, it occurs that shifting the gear lever into drive selects only fourth gear, and when checking the fault memory, the diagnosis points to a solenoid issue. Experience teaches that the first thing to check is the power supply to the solenoid itself: with the wiring diagram in hand, measure the supply voltage at the relevant pins; if you find a value below 12 volts, then there is a power supply issue likely coming from the fuse box and relay: the problem lies in the relay supplying power to the solenoid, and replacing it resolves the issue. If you had only focused on the diagnostic indication, you would have inappropriately replaced a part that is, moreover, not inexpensive.

Updated on 15 February 2026 by ScegliAuto

Video tutorial

Related tutorials

Jeep Grand Cherokee (2010-2021 / WK2, MK 4) This guide shows how to unlock the automatic gear lever on the Jeep Grand Cherokee. This procedure allows you to unlock the gear lever in case of a f…
Jeep Grand Cherokee (2004-2010 / WK, MK 3, WH) On all cars with automatic transmission, you must press the brake pedal to allow engine start and subsequently engage the gears. If pressing the brak…
Jeep Grand Cherokee (2010-2021 / WK2, MK 4) This video shows how to reset the oil light on a Jeep Grand Cherokee produced from 2010 to 2021. The procedure is very simple and quick, taking less …

How to Bleed the Clutch on a Renault Clio?

To bleed the clutch on a Renault Clio, open the bonnet to access the components located in the engine bay: here, you will need to undo the screws that secure the battery in its housing, the intake manifold, and the coolant reservoir. This will allow you to locate the pipe through which the brake fluid flows: by inserting the other end of the pipe into a container, you can press the clutch pedal to expel all the fluid until it fills the container.

Watch the video!


by ScegliAuto

More videos