85 380SE fuel pump relay issue - Mercedes-Benz Forum

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post #1 of 4 (permalink) Old 04-20-2004, 09:31 AM Thread Starter
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85 380SE fuel pump relay issue

Where is the relay for the fuel pump in the 85 380SE (W126 body)???

I have an issue which should be easy to fix but I cannot find the relay! The car will not start, and I am certain the relay is the issue because the pump has been replaced already, and it is an intermittent (now getting worse) problem.

Thanks for any help!!!

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post #2 of 4 (permalink) Old 03-28-2009, 07:46 PM
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Under the hood in the Fuse box in front of the steering wheel. It's the largest relay in the back corner on the drivers side.
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post #3 of 4 (permalink) Old 03-30-2009, 03:53 AM
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Underside of the car, lined up approximately with the trunk, in between the axel rods.
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post #4 of 4 (permalink) Old 03-30-2009, 05:38 AM
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Try here for 380SE W126:

Plate 1 fig 1 is for 6 cylinder models
Plate 1 fig 2 is for 8 cylinder models

units identified in figs 1 & 2.

K1 - overvoltage protection relay
N6 - control unit compressor cutout
N10 - combination relay (turn, wiper)
N16/3 - fuel pump relay
N16/4 - fuel pump relay & kickdown cutout
N30 - ABS control unit
N30/1 ABS/ASR control unit
N47 - ASD control unit
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