Aux relay DIY
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Newbie
Joined: Nov 2016
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Aux relay DIY
Didn' find an aux relay diy and I know they charge a good amount to replace it at the stealer. Mine was throwing codes for blown aux relay. Found one online for $40 and fixed the issue. I'm assuming the previous owner installed the aux backwards (I haven't owned my 500 long) in the pdf, the wiper nut sizes are 13mm not 14mm. Hope this helps others save money.
Super Member
Joined: Jun 2017
Posts: 577
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From: PA
W223 S500 LWB 4-Matic, W222 S450 LWB 4-Matic, A238 E400 Cabriolet 4-Matic
What does the AUX relay control... AUX Battery? Thanks for the post as it pertains to removing the wipers also. I may be taking the wipers & cover off in search of some water intrusion.
