SL/R230: 20 Amp fuse blows
Thread Starter
Junior Member
Joined: Mar 2014
Posts: 44
Likes: 4
05 Mercedes SL500
20 Amp fuse blows
I know that something is shorting this out, but need a head start. I just rebuilt the impeller in the PSE pump bu every connector was reconnected easily. Suggestions?
MBWorld Fanatic!
Joined: Aug 2020
Posts: 1,325
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From: Gretna, NE
'03 SL55 Black, '03 SL500's Aegean, Mars Red, Tazanite, Alabaster, '11 S550 Flint Gray
If you overtighten the pump housing when you reassemble, it will not allow the motor to turn and blow fuses.
Member
Joined: Jan 2018
Posts: 129
Likes: 41
From: Florida
2017 SL550 (R231), 2021 E350 (W213)
MIkeJ65 is spot on. I had the same issue after cleaning the PSE. I connected it to a bench power supply before install the second time. It allowed tweaking the torque to lower the startup current.
