Date registered: Jan 2019
Vehicle: 2004 Mercedes S430 4Matic
Location: Illinois/Wisconsin Boarder USA
Mentioned: 1 Post(s)
Quoted: 19 Post(s)
Check ur junction box under the passenger side carpet/footwell area. Make sure you have full battery power across all 3 fuses/terminals and make sure the positive connections, mainly the bottom 2 right ones are tight.
Then if no problem is found because thats where both underhood fuse boxes are feed, pull ur sams from both underhood fuse boxes one at a time and take em apart and check for water damage/rust inside and on all the pins and make sure all connector plugs are bottomed out and properly locked down