RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×


Reply
 
Thread Tools Display Modes
Old 12-05-2020, 08:13 PM   #1
Junior Member
 
Join Date: Feb 2020
Location: North central Oklahoma
Posts: 22
Dash mounted ABS switch light

Need help with my 2017 Dynamax DX3. There is a momentary rocker switch located on the dash with (ABS) printed on it with a red indicator light. This light stays on constantly. Even when the 12 volt chassis batteries are isolated, and everything else on the dash shuts off, this light stays on.

Cannot find any information on this switch. I think it probably has something to do with the Automatic Braking System?
richer is offline   Reply With Quote
Old 12-05-2020, 09:22 PM   #2
Senior Member
 
Bill Davis's Avatar
 
Join Date: Aug 2017
Location: Marysville, Ohio
Posts: 1,196
Quote:
Originally Posted by richer View Post
Need help with my 2017 Dynamax DX3. There is a momentary rocker switch located on the dash with (ABS) printed on it with a red indicator light. This light stays on constantly. Even when the 12 volt chassis batteries are isolated, and everything else on the dash shuts off, this light stays on.

Cannot find any information on this switch. I think it probably has something to do with the Automatic Braking System?
I remember something about this on the forum, but it been a few months ago. I think they decided it was the switch that connects the chassis batteryís to the coach battery to help start the coach when the battery is dead. If itís a momentary switch thatís probably it.
__________________
2008 Dynaquest 340xl
Bill and Carol
Retired mechanic
US Army Veteran 🇺🇸
Previous coach 2017 Isata 3RW
Also,3 Diesel pushers, 1Bvan, 2 class Cs
Bill Davis is online now   Reply With Quote
Old 12-05-2020, 10:38 PM   #3
Retired Army Paratrooper
 
MasterBlaster's Avatar
 
Join Date: Feb 2017
Location: Enterprise Alabama
Posts: 826
We have 2016 force hd and the only momentary switch on the dash connects the house and chaise batteries. So like Bill said is more than likely same on yours.
__________________
Dennis & Zoleta
Retired US Army
Force 37BHHD
MasterBlaster is offline   Reply With Quote
Old 12-07-2020, 08:29 AM   #4
Junior Member
 
Join Date: Feb 2020
Location: North central Oklahoma
Posts: 22
Thanks, when I tried to research this switch on this forum, I thought it may be to connect the house and chassis batteries.

But I have two reasons why I don't think this is what this switch is for;
1. It has letters ABS printed on it. What would these stand for?
2. The continuous red light located inside the switch? This light shines 24/7 no matter what is turned on or off. It really shows up at night when all the other lights in the coach are off.
richer is offline   Reply With Quote
Old 12-07-2020, 08:46 AM   #5
Senior Member
 
Bill Davis's Avatar
 
Join Date: Aug 2017
Location: Marysville, Ohio
Posts: 1,196
Quote:
Originally Posted by richer View Post
Thanks, when I tried to research this switch on this forum, I thought it may be to connect the house and chassis batteries.

But I have two reasons why I don't think this is what this switch is for;
1. It has letters ABS printed on it. What would these stand for?
2. The continuous red light located inside the switch? This light shines 24/7 no matter what is turned on or off. It really shows up at night when all the other lights in the coach are off.
BC will probably chime in, but I think it was like auto battery switch or something like that.
__________________
2008 Dynaquest 340xl
Bill and Carol
Retired mechanic
US Army Veteran 🇺🇸
Previous coach 2017 Isata 3RW
Also,3 Diesel pushers, 1Bvan, 2 class Cs
Bill Davis is online now   Reply With Quote
Old 12-07-2020, 08:49 AM   #6
Member
 
Join Date: Oct 2015
Posts: 78
Could it be to turn your ABS system on and off? There are times (not many) when you'd want to disable the system. I would think it would be red when the system is off.
JohnMirada is offline   Reply With Quote
Old 12-07-2020, 08:52 AM   #7
Senior Member
 
Bill Davis's Avatar
 
Join Date: Aug 2017
Location: Marysville, Ohio
Posts: 1,196
I found the old post. Search abs switch and youíll find it. Itís is the battery connect switch. Not sure why itís always lit.
__________________
2008 Dynaquest 340xl
Bill and Carol
Retired mechanic
US Army Veteran 🇺🇸
Previous coach 2017 Isata 3RW
Also,3 Diesel pushers, 1Bvan, 2 class Cs
Bill Davis is online now   Reply With Quote
Old 12-07-2020, 09:04 AM   #8
Senior Member
 
Chuck_S's Avatar
 
Join Date: Aug 2018
Location: Richmond VA
Posts: 1,623
I don't know the system but suspect the switch controls a relay which is stuck in the "interconnected" position. (Dash switches can only handle a small amount of amps which are rarely enough to start an engine.)

-- Chuck
__________________
2006 Roo 23SS behind a 2017 Ford Expedition
Chuck_S is offline   Reply With Quote
Old 12-07-2020, 09:12 AM   #9
Senior Member
 
bubbles's Avatar
 
Join Date: Dec 2012
Posts: 5,401
Quote:
Originally Posted by Chuck_S View Post
I don't know the system but suspect the switch controls a relay which is stuck in the "interconnected" position. (Dash switches can only handle a small amount of amps which are rarely enough to start an engine.)

-- Chuck
Me thinks you misunderstand the posts. No one is saying it is to start the engine they are saying it is used to connect the chassis and coach batteries together (paralleling them) so the engine can be started assisted by the coach batteries when the chassis batteries are not charged enough. Typically the switch energizes the solenoid/relay that is used to parallel the coach/chassis batteries for charging from either shore power/on board generator or engine alternator.
bubbles is offline   Reply With Quote
Old 12-07-2020, 10:25 AM   #10
Senior Member
 
FOURWHL's Avatar
 
Join Date: Mar 2016
Posts: 2,620
I believe ABS was meant to signify Automatic Battery Sync or some such nonsense. Really I think it was all they could get for awhile because before that people just complained about the unlabeled switch on the dash.

But yes I'm certain its to link your two battery banks.

As to why its lit all the time, probably has to do with how its fed for the backlight. Last time I had the dash apart I seem to remember that these switches get their power from a different spot than the signal they're switching. Prob has a constant 12v feed.
__________________
2016 Dynamax DX3 - Big Blue

- Traveling the country in our DX3 for the next year
FOURWHL is offline   Reply With Quote
Old 12-07-2020, 10:36 AM   #11
Senior Member
 
Mr Towed's Avatar
 
Join Date: Jul 2018
Location: Long Island, NY
Posts: 539
I think it is ABSURD to use an extremely common acronym, which, in a vehicle, normally stands for Antilock Braking System, for something else totally unrelated and have nothing to indicate that.

As to the issue of the light staying on all the time I would say the switch is either faulty or wired incorrectly. If this was wired so it makes sense I would think it should be lit either only when the vehicle lights are on, or only when the solenoid is engaged, which would tell you that the switch is actually doing something.
__________________
Travel Trailer: 2004 Flagstaff 25LB
New Tow Vehicle: 2017 F-150 3.5 Ecoboost, supercrew short bed FX4 Lariat
Old Tow Vehicle: 2009 Silverado 2500HD 4x4 Ext. Cab Short Bed
Travel Pooch:Sophie the Sato - Cats: Rhody and Hazy
2018:22nights / 2019:31Nights / 2020:18Nights
Mr Towed is offline   Reply With Quote
Old 12-07-2020, 11:13 AM   #12
Motorized GM
 
Join Date: Nov 2007
Location: Bristol, IN
Posts: 14,734
Quote:
Originally Posted by Mr Towed View Post
I think it is ABSURD to use an extremely common acronym, which, in a vehicle, normally stands for Antilock Braking System, for something else totally unrelated and have nothing to indicate that.

As to the issue of the light staying on all the time I would say the switch is either faulty or wired incorrectly. If this was wired so it makes sense I would think it should be lit either only when the vehicle lights are on, or only when the solenoid is engaged, which would tell you that the switch is actually doing something.
I think it is slightly absurd to assume intent and/or to know what is going on without owning the coach or at least asking the question.

The why is...blank "lighted" switches were not available for that particular dash at that time. Whether it was a good decision or not they used the switch they could get. As long as the switch is explained in a manual or with a sticker then all is not lost...there is NO emergency battery start in automotive, so in the end it is a meshing of industries. ABS (Auxiliary Battery Start), was jokingly mentioned (after the fact by me) as justification for using that switch. It was not intentional at the time...at the time it was just getting a lighted switch to use for that function and to find a switch more appropriate and to make sure it was stocked.
__________________
Please post questions as a "New Thread" (not private message) so that others can benefit from the answers. Use Private Messages for sensitive information only. Owners manuals are available online and via iPhone/Android Apps.https://www.dynamaxcorp.com/OnlineManual.aspx Don't forget to subscribe to our YouTube page for "How To" videos and updates https://www.youtube.com/c/DynamaxRVs/
bclemens is offline   Reply With Quote
Old 12-07-2020, 09:45 PM   #13
Junior Member
 
Join Date: Feb 2020
Location: North central Oklahoma
Posts: 22
Thanks for all the great responses. This is reassuring to know I was not crazy....I bought this unit used so I probably did not get all the factory manuals/papers.

BC, I am Okay with the lettering, what they stand for is no big deal. But what about the red light staying on constantly? Could I have a relay stuck on? If so, would anyone know where I would start looking?
richer is offline   Reply With Quote
Old 12-08-2020, 08:13 AM   #14
Motorized GM
 
Join Date: Nov 2007
Location: Bristol, IN
Posts: 14,734
Quote:
Originally Posted by richer View Post
Thanks for all the great responses. This is reassuring to know I was not crazy....I bought this unit used so I probably did not get all the factory manuals/papers.

BC, I am Okay with the lettering, what they stand for is no big deal. But what about the red light staying on constantly? Could I have a relay stuck on? If so, would anyone know where I would start looking?
As I recall, some of the switches were just backlit or maybe it is pinned wrong. I know on the Jake Brake...it is lit regardless if it is high or low. (its not like Low or Hi light up separately)
__________________
Please post questions as a "New Thread" (not private message) so that others can benefit from the answers. Use Private Messages for sensitive information only. Owners manuals are available online and via iPhone/Android Apps.https://www.dynamaxcorp.com/OnlineManual.aspx Don't forget to subscribe to our YouTube page for "How To" videos and updates https://www.youtube.com/c/DynamaxRVs/
bclemens is offline   Reply With Quote
Old 12-09-2020, 01:05 PM   #15
Viet Nam era Navy veteran
 
Wolf Alaska's Avatar
 
Join Date: Jun 2018
Location: North Alabama
Posts: 145
Some folks expectations are beyond belief

Brian C., I concur.

"As I recall, some of the switches were just backlit or maybe it is pinned wrong. I know on the Jake Brake...it is lit regardless if it is high or low. (its not like Low or Hi light up separately)"

I find it luxurious for the engine brake switch to light up when ON. I appreciate the feature.
After applying the engine brake a few times, I knew from Fury's response whether I was in hi or lo retard & which way to move the switch control.

If I think a switch needs more identification, I make a small label & put it beside the switch. Mainly use this technique for seldom used switches like "Road lamps" or "Docking lamps".
I have the location of most switches & all gauges memorized.

If folks get hostile about the fine Dynamax switches & instrument panels, wait until they find out the rules of SS & Medicare! All I can tell them is: " your senator is sitting at his desk by the phone, waiting for your call."
__________________

Let's Roll !
Wolf Alaska

Fury, Dynamax Freightliner Columbia Grand Sport GT GC400GT
Papa Bear, Jeep Commander Overland
Wolf Alaska is offline   Reply With Quote
Old 12-09-2020, 05:34 PM   #16
Junior Member
 
Join Date: Feb 2020
Location: North central Oklahoma
Posts: 22
Thanks again for everyone's great input on this. It has really been bugging me that the light stays on constantly, even when all chassis voltage has been turned off to the dash.

Now that I know the light is really not needed, I will see if I can get the power feeding the light cut off with out effecting the main operation of the switch. If no one chimes in and tells me doing so is illegal!
richer is offline   Reply With Quote
Old 12-11-2020, 10:22 AM   #17
Senior Member
 
FOURWHL's Avatar
 
Join Date: Mar 2016
Posts: 2,620
Quote:
Originally Posted by richer View Post
Thanks again for everyone's great input on this. It has really been bugging me that the light stays on constantly, even when all chassis voltage has been turned off to the dash.

Now that I know the light is really not needed, I will see if I can get the power feeding the light cut off with out effecting the main operation of the switch. If no one chimes in and tells me doing so is illegal!
I'm willing to bet its just a matter of disconnecting the correct wire from the back of the switch. Should be pretty simple. And as an added plus the M2 dash is probably one of the easiest vehichles I've ever had to remove/replace the dash on.
__________________
2016 Dynamax DX3 - Big Blue

- Traveling the country in our DX3 for the next year
FOURWHL is offline   Reply With Quote
Old 12-11-2020, 03:05 PM   #18
Junior Member
 
Join Date: Feb 2020
Location: North central Oklahoma
Posts: 22
Thanks. I will work on this when the weather warms up a little. I will try to take pictures to help anyone else if needed.
richer is offline   Reply With Quote
Reply

Tags
light, mount, switch

Thread Tools
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


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.



All times are GMT -5. The time now is 09:00 PM.