GLE Class (W166) Produced 2015-2019

Gle 2016 fault code U0109

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Old Apr 24, 2023 | 02:56 AM
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gle 2016
Gle 2016 fault code U0109

Does anyone know which relay is for the fuel pump on a 2016 gle I tried looking everywhere for a diagram. I was driving this morning and my vehicle turnt off it cranks but doesn’t start i get a fault code Lost Communication With Fuel Pump Control Module
I replaced both fuse for the fuel pump and it still doesn’t start. I wanna try and replace the relay before I take it in to a shop just need help locating it.

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Old Apr 24, 2023 | 04:18 AM
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bone stock E55 AMG
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Old Apr 24, 2023 | 08:26 AM
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2016 GLE 300d 4-Matic
The fuel pump controller is in the back under the spare tire plastic carrier. There's actually a NHTSA recall out (NHTSA Recall ID Number: 22V955) for an issue that would cause your problem. It seems that water can accumulate in the volume underneath the spare and cause problems with the fuel pump controller. There's a post about the recall here.

Last edited by John Ha; Apr 24, 2023 at 08:30 AM.
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