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Hi, does anyone know how to remove the electrical harness on the high-pressure fuel pump that is mounted on the engine? I already did the steps necessary to uninstall the unit itself with taking the manifold and everything off the issue now is I cannot for the life of me figure out how to disconnect the electrical connection. I understand in the work progress sheet it says just to disconnect the quantity control valve electrical connect could someone help me? This is for a 2013 C300 4matic sports sedan with the engine M276
The electrical connection for the quantity control valve
Last edited by luckywander; Oct 25, 2025 at 03:46 PM.
Reason: Added the engine type
Is it 90 below? The white part pulls out then releases the connector. The connector may be seized on and takes some wiggling. The connector is similar to the one on my thermostat and it was giving me problems.
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