Campaign 23V-878

Incorrect screws, installed on the high-pressure fuel pump, may prevent a proper seal from forming between the high-pressure fuel pump and the…

Defect summary

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023 GLC300, 2024 GLE350, and GLE450 vehicles equipped with an M254 engine. The incorrect screws, installed on the high-pressure fuel pump, may prevent a proper seal from forming between the high-pressure fuel pump and the tandem oil pump.

Consequence

An inadequate seal can allow fuel and oil to leak onto the road, creating a hazard for other road users and increasing the risk of a crash. Additionally, a fuel and oil leak in the presence of hot engine components can increase the risk of a fire.

Remedy

Dealers will replace the high-pressure fuel pump, free of charge. Owner notification letters were mailed February 9, 2024. Owners may contact MBUSA customer service at 1-800-367-6372.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Source: NHTSA ODI recalls file, campaign 23V878000. Text as published by NHTSA.

Vehicles covered

3 product lines are covered

Owner complaints filed with NHTSA about engine and cooling on these vehicles: 16, of which 0 involved a crash, fire, injury or death. Complaints are not verified by NHTSA.

Vehicles covered by campaign 23V-878
Make	Model	Model years	Complaints on this component
Mercedes-Benz	GLC 300	2023	15
Mercedes-Benz	GLE 350	2024	1
Mercedes-Benz	GLE 450	2024	0

Source: NHTSA ODI recalls and complaints files. Equipment, tire and child-seat campaigns list products, not vehicles.

Investigation

No NHTSA investigation is linked to this recall

Most recalls are started by the manufacturer. This one lists "Manufacturer" as its origin.

Before the recall

3 service bulletins on this component came first

Distinct manufacturer communications on the same component group, make, model and model year in the 24 months before the report date.

Source: NHTSA manufacturer communications file.

Service bulletins

24V-704 Sep 20, 2024
In the event of a mechanical failure in the engine Camtronic system, the engine control unit (ECU) software may cause the engine to overheat or stall
21V-843 Oct 29, 2021
Engine control unit software error may cause a sudden engine stall, without the ability to restart the vehicle
20V-364 Jun 22, 2020
Screws that retain the turbocharger oil feed and return lines may not have been properly tightened, possibly resulting in an oil leak
20V-173 Mar 20, 2020
Two engine oil plugs may not withstand high engine loads while driving, possibly resulting in an engine oil leak
20V-048 Jan 27, 2020
Oil feed line to the turbocharger may leak
19V-821 Nov 15, 2019
Threaded connection between the camshaft idler gear and the crankcase may be improperly tightened, possibly causing the idler gear to detach from…