Park the Mercedes-Benz on a level ground set the parking brake, and let the engine cool down.
Pull the hood release under the dashboard to open the hood.
Remove the engine cover by lifting it.
Remove the T-25 Torx bolts that secure the ignition coil to the engine. Each ignition coil has two bolts.
Disconnect the electrical connector. Use a flathead screwdriver to unlock the tab on the connector. Then press and pull the connector away.
If the ignition coil comes with the boot, pull up the coil and the boot together to remove them from the spark plugs.If you are not replacing the boot, use a flathead screwdriver to pry out the spark plug boot from the ignition coil.Pull the ignition coil upwards.
Remove the ignition coil.
Install the new ignition coil and torque the Torx screws to 10Nm.
Mercedes-Benz 2.0T Ignition Coil Replacement | M274 M270 This guide provides instructions on how to change the ignition coils in 2013 and newer Mercedes-Benz models equipped with the four cylinders 2.0-liter turbo engine. See the application list below.