'14 ML3502w fuses for trailer hitch "HELP"
02-22-2017, 06:31 PM
#1
Super Member
Thread Starter
Join Date: Sep 2016
Location: TX
Posts: 972
Received 140 Likes
on
125 Posts
2014 ML350 2w, 2017 GLS550, 1967 Pontiac GTO 4 sp
'14 ML3502w fuses for trailer hitch "HELP"
Can someone who uses their ML to tow a trailer please verify if there are fuses in the following positions? 101, 111, 115, 126, 128, 130. I have been working on an auxiliary backup light power source. I bought a 7 pin hitch plug and used the ground blade and the center backup light pin to power it. No go. Plugged it into my Durango and it lit up right away, so the light is good. Checked the fuse box and 3 of those listed were missing. 101 (20a), 111 (15a) and 126 (15a) were missing. I checked the other 3, 115, 128, 130 and the fuses were good. So before I go running to the dealer, should all 6 positions have fuses in them? Any else I might be missing? Thanks.
Last edited by pjw1967; 02-23-2017 at 01:37 PM.
02-24-2017, 09:02 PM
#2
Senior Member
My 2014 BLUETEC trailer lights didn't work after I hooked up a certain trailer of mine to it. I found fuse 101 popped, and once it was replaced, the lights worked again (after fixing the bad trailer wiring on the...trailer).
F126 is empty on mine...........F115 is also empty on mine.
Did your vehicle come with a factory installed trailer hitch?
F126 is empty on mine...........F115 is also empty on mine.
Did your vehicle come with a factory installed trailer hitch?
Last edited by HAILERS2; 02-24-2017 at 09:07 PM.
02-24-2017, 09:08 PM
#3
Super Member
Thread Starter
Join Date: Sep 2016
Location: TX
Posts: 972
Received 140 Likes
on
125 Posts
2014 ML350 2w, 2017 GLS550, 1967 Pontiac GTO 4 sp
My 2014 BLUETEC trailer lights didn't work after I hooked up a certain trailer of mine to it. I found fuse 101 popped, and once it was replaced, the lights worked again (after fixing the bad trailer wiring on the...trailer).
F126 is empty on mine...........F115 is also empty on mine.
F126 is empty on mine...........F115 is also empty on mine.
02-24-2017, 09:58 PM
#4
Senior Member
PHOTO OF MY ML350 BLUETEC FUSE BOX
02-24-2017, 10:08 PM
#5
Senior Member
CHECK MY PHOTO WITTH WHAT YOU HAVE. I SEEMED TO HAVE MISCOUNTED ON THE FUSE 115????? IT SEEMS IT'S FUSE 111 THAT I DO NOT HAVE INSTEAD OF 115. TAKE A LOOK FOR YOURSELF.
The following users liked this post:
pjw1967 (02-24-2017)
02-25-2017, 04:32 PM
#6
Super Member
Thread Starter
Join Date: Sep 2016
Location: TX
Posts: 972
Received 140 Likes
on
125 Posts
2014 ML350 2w, 2017 GLS550, 1967 Pontiac GTO 4 sp
Checked them all again but still no power. Thanks for the fuse box photo. You have a 5a that says Bluetec on the list. Will update after trip to dealer.
02-26-2017, 06:10 PM
#7
Super Member
Thread Starter
Join Date: Sep 2016
Location: TX
Posts: 972
Received 140 Likes
on
125 Posts
2014 ML350 2w, 2017 GLS550, 1967 Pontiac GTO 4 sp
Good news and bad news. Good news is part of the hitch lighting works. Got a 7 to 4 pin adapter and hooked up my bro's trailer. All functions worked. Unfortunately, the 4 pin doesn't power backup lights. So the poss that only the backup circuit is bad is now becoming remote. At least I didn't go to the dealer to only get a call later that nothing's wrong. The problem is trying to test the circuit with the car in reverse. Talk about destructive testing. To be continued.....
