Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-11-2018, 11:41 AM   #1
2 Rivet Member
 
2017 Interstate Grand Tour Ext
Bozeman , Montana
Join Date: Aug 2016
Posts: 36
Dead Chassis Batt now Most Sprinter Electrical Systems Fail

Hello all -- found my trickle charger disconnected yesterday and chassis battery dead. I charged the battery and engine started right up. I've since driven a number of miles and restarted the engine a dozen times without problem except ...


I have multiple Sprinter electrical systems not working ... SRS, lights, wipers, electrical door locks, fuel gauge, climate control ...


Check engine light and SRS lights on, brake warning lights on.


Obviously an electrical component failed/fried or a system reset needed. Nearest Mercedes dealer is 2 hours away and I'm reluctant to drive much with all these systems out.


Any tips greatly appreciated!


David J
__________________

ArcherTC is offline   Reply With Quote
Old 06-11-2018, 11:56 AM   #2
4 Rivet Member
 
Mansderm161's Avatar
 
Currently Looking...
2018 Interstate Grand Tour Ext
NORTH MYRTLE BEACH , South Carolina
Join Date: Dec 2017
Posts: 335
I don't know the answer but you might be able to call the Mercedes service department and give them the info you provided. It may be a simple thing to reset.
__________________

Mansderm161 is offline   Reply With Quote
Old 06-11-2018, 11:58 AM   #3
Rivet Master
 
Lily&Me's Avatar

 
2006 22' Interstate
Normal , Illinois
Join Date: Jan 2009
Posts: 14,652
A sprinter dealer may be able to help you, or RV service center.


Maggie
__________________
🏡 🚐 Cherish and appreciate those you love. This moment could be your last.🌹🐚❤️
Lily&Me is offline   Reply With Quote
Old 06-11-2018, 01:39 PM   #4
Rivet Master
 
2013 Interstate Coach
Raymond , Iowa
Join Date: Jun 2014
Posts: 807
When goofy things happen to computers or garage door openers first thing I do is remove power for 30 minutes. On the garage door opener this means unplug it. On a laptop computer this means remove the battery. So... I would disconnect the Sprinter at the accelerator pedal and wait a while then plug it back in. Be sure that the engine has been shut off at least 10 minutes before disconnecting - there are some after-shutdown things that have to happen before removing power.
Titus is offline   Reply With Quote
Old 06-11-2018, 03:57 PM   #5
2 Rivet Member
 
2017 Interstate Grand Tour Ext
Bozeman , Montana
Join Date: Aug 2016
Posts: 36
System reboot!

Thanks to all ... I think Titus has it right. I did talk to a service tech at MB who recommended disconnecting the battery then after 10 minutes doing a "hard reset" by connecting the (+) and (-) cables to each other (Not the battery of course!). He said this will help discharge any current remaining in the onboard computers.



I followed his instructions and it helped temporarily ... fuel gauge read properly, didn't have time to check other functions though as the SRS warning light came back on and the other systems then failed again. I'm giving it another try with a longer disconnect etc. but at least I'm encouraged that it's not a component problem but rather low voltage error codes that need to be cleared.
ArcherTC is offline   Reply With Quote
Old 06-12-2018, 01:47 PM   #6
New Member
 
2018 Interstate Grand Tour Ext
Boise , Idaho
Join Date: May 2018
Posts: 2
I have exactly the same issue. 2018 GT with 400 miles on it. No evidnce that my battery was low, but van was fine until I packed it up and was ready to leave. Then, exactly as you describe: SRS error, fuel gauge dad, AC and seat heaters dead, lights don’t work, sensors dead, check engine light on, parking break light one, etc. Got towed to mercedes dealer. Dealer says Airstram patched into Canbus with “aftermarket radio” and this caused problem. Then they wanted me to fetch it up and pay for time since it wasn’t a sprinter warranty thing. Obviously this is NOT the problem.

Turns out, it is a setup thing in the Fusion headunit. Just heard from my AS service guy and he is bringing Van by my house (while I was writing the above). Says there was recently a service bulletin from Fusion about this, and AS corporate is now aware of it. I do not yet know exactly what the setup thing is, since he is going to explain when he arrives. I will post when I learn the fix.
tgilton is offline   Reply With Quote
Old 06-12-2018, 02:30 PM   #7
New Member
 
2018 Interstate Grand Tour Ext
Boise , Idaho
Join Date: May 2018
Posts: 2
Update on failed systems

Okay. The Fusion headunit appeared to somehow find itself in the wrong mode after a hard reboot. There is a setting ("settings" then "system") that lets us choose CAN mode, and that was in PSM mode. The device must have rebooted when we disconnected the house battery, and came up in the PSM mode, which pissed off the CANbus and all the signals went nuts for the sensors on the bus. Once our service guy tapped the CAN mode, all the sensors and everything worked correctly... Now, the OP's problem might be different, but the symptoms are the same as mine, and mine is now fixed with this setting selected correctly. Just go into settings, and scroll down to the CAN mode option and pick CAN. If that isn't it, I wait with baited breath to what the solution is to your problem!

EDIT: Mine is a 2018, and I understand that the bus setup might be different for different years, so just be aware.
tgilton is offline   Reply With Quote
Old 06-13-2018, 06:32 AM   #8
2 Rivet Member
 
2017 Interstate Grand Tour Ext
Bozeman , Montana
Join Date: Aug 2016
Posts: 36
Fusion CAN Mode ...

Wow, Tgilton, amazing ... never would have guessed the Fusion unit could cause this problem! I will try your fix this morning and let you know.


Please tell me who your tech guy is in case I need to contact them, thank you for the information!
ArcherTC is offline   Reply With Quote
Old 06-13-2018, 10:16 AM   #9
2 Rivet Member
 
2017 Interstate Grand Tour Ext
Bozeman , Montana
Join Date: Aug 2016
Posts: 36
Fixed !!!

A note for anyone else with this problem, tgilton was right. Under system settings on the Fusion unit there are two menu entries for the CANbus. The first looked like it was selected okay but when I tapped the second options were "PSM" or "direct" (I think). Mine had PSM selected. As soon as I changed it all the electrical system problems resolved !


Thanks so much to tgilton, helped resolve a huge headache for me !!!


David J.
ArcherTC is offline   Reply With Quote
Old 06-13-2018, 10:33 AM   #10
Prof. of Pending Projects
 
wachuko's Avatar

 
2018 Tommy Bahama Interstate
Orlando , Florida
Join Date: Sep 2017
Posts: 1,691
Great news!!!

I need to store this in a non-volatile memory section of my brain in case I run into it
__________________
Safe travels!
Wachuko
WBCCI #26769
2018 Airstream Interstate 3500 Lounge EXT Tommy Bahama w/ARS
wachuko is offline   Reply With Quote
Old 06-13-2018, 01:30 PM   #11
Rivet Master
 
2013 Interstate Coach
Raymond , Iowa
Join Date: Jun 2014
Posts: 807
Maybe my Kenwood isn't so bad after all.. Far as I know it does not cause problems with the Sprinter CAN (knock on wood) and does not kill my chassis battery.
Titus is offline   Reply With Quote
Old 06-13-2018, 03:21 PM   #12
4 Rivet Member
 
Mansderm161's Avatar
 
Currently Looking...
2018 Interstate Grand Tour Ext
NORTH MYRTLE BEACH , South Carolina
Join Date: Dec 2017
Posts: 335
I find this interesting. I had a bad chassis battery on my 2018 AI and Mercedes just replaced it. I assume they disconnected everything and would be clueless about fusion? Yet everything works with new battery. Was your problem related to the battery going dead or related to the trickle wire?
Mansderm161 is offline   Reply With Quote
Old 06-13-2018, 06:05 PM   #13
Wannabe RV'er in training
 
Alex AVI's Avatar

 
2018 Interstate Lounge Ext
High Desert , Las Vegas , Nevada
Join Date: Feb 2018
Posts: 1,396
Quote:
Originally Posted by tgilton View Post
which pissed off the CANbus and all the signals went nuts for the sensors on the bus. Once our service guy tapped the CAN mode, all the sensors and everything worked correctly.
First, glad you and AS tech figured it out. BTW - it is so easy to get settings messed up with Fusion. Happens to me a lot just by cleaning the screen, sees it as a "swipe" function. So I clean screen only when Main Disconnect is off

Second, this is the main reason why everyone should stay away from the CANBUS (different thread - Bypass Fusion GPS nanny filter). One wrong move or even a discharged battery and boom, things can cascade into major issue and blow up in your face. Some CANBUS errors are easily reversed by fixing underlying wiring/component that caused it. Others pull up a HARD code that can't get reset without expensive dealer intervention.
Alex AVI is offline   Reply With Quote
Old 06-14-2018, 09:59 AM   #14
2 Rivet Member
 
2017 Interstate Grand Tour Ext
Bozeman , Montana
Join Date: Aug 2016
Posts: 36
Clarification

To answer mansderm161 ...


I keep a trickle charger on the chassis battery because of the Fusion current drain issue. Last week it got disconnected and I found the chassis battery dead (probably no charge 5-6 days ). I charged the battery and the RV started right up but all the electrical issues I mentioned appeared.


My understanding is that the Fusion did a "hard reboot" and in the process the CANbus setting got changed and subsequently scrambled all the Sprinter communication. I believe this is a random event so disconnecting the chassis battery won't always cause this fault.


BTW, I recently updated the Fusion firmware to the latest version: 3.6. Don't know if this version is more susceptible to this fault.
__________________

ArcherTC is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Tow vehicle batt vs Trailer Lithium batt while driving CaliBamb Batteries, Univolts, Converters & Inverters 3 05-27-2018 08:47 PM
2017 - Dead chassis battery ScottP Sprinter and B-van Forum 33 04-24-2017 01:13 PM
Shurflo don't fail me now... dlb435 Fresh Water Systems 9 12-24-2012 08:04 AM
Simple electrical question about Batt. and charger jasoncase Electrical - Systems, Generators, Batteries & Solar 7 07-18-2009 10:25 AM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:15 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.