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Abs, traction control, trailer brake service messages

Batteries in these trucks are like the tires. JUNK! Lowest bidder, probably. When I get to four years (only put 6000 a year on it) i will be replacing both tires and batteries as a preventative measure.
 
yeah i'm sure you're right but I dont want to put in new batteries and find out it's actually a bad ABS module
 
I also have a 2019 HO/Aisen and having similar problems. I added a Battery Tender and even with that, I still had a problem this week. I am going to go with two new H7 (94R) AGM batteries from Interstate. I'll let you know if that fixes my issues. Does anyone get a loud clunk, then a Popp in the cab? Nice to know about the Press Brakes and hit the start button twice. I'll try to rememeber that next time. Not that you want to avoid the Diesel Preheat, but in an emergency case.
 
bobthefarmer said:
Not that you want to avoid the Diesel Preheat, but in an emergency case.
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I avoid it all the time, it’s not programmed around what the engine needs to start but rather emissions.

There is zero need for a preheat at 30°F, let alone 66°F. It’s just an unnecessary drain on the batteries, and then alternator to recharge.

Aside from a remote start I don’t use mine for the full time unless it’s below 0° and generally fully bypass it until it’s below 25°.

One of the things I really enjoyed about tuning my 05 was the ability to adjust the pre-heat cycle away from what Dodge did for emissions.

Cummins advertises the ISB to start down to 10° without any form of aid.
 
Buy a battery tester they are inexpensive and can diagnose multiple issues . Saves you a lot of grief and time .
 
bobthefarmer said:
I also have a 2019 HO/Aisen and having similar problems. I added a Battery Tender and even with that, I still had a problem this week. I am going to go with two new H7 (94R) AGM batteries from Interstate. I'll let you know if that fixes my issues. Does anyone get a loud clunk, then a Popp in the cab? Nice to know about the Press Brakes and hit the start button twice. I'll try to rememeber that next time. Not that you want to avoid the Diesel Preheat, but in an emergency case.
Click to expand...
Pre heat is not as important as you think besides it will still run the grid heater once the truck is running.
 
Faithfuller said:
It’s a 2019 3500 bighorn. The fuel filter percent got down to 1%. I tried to attach a video of what the dash is doing but it only allows pictures. when I try to start the truck it cycles thro the preheat and acts like it will start but just does one click then it will ding through the service alerts. is there a way to send you the video?
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I took my fuel filter to 0% for the last change
 
Every time it rains hard overnight and I start my truck in the morning i get the ABS light light, Trailer Brake fault, no 4wd avaible, and no traction control lights. so now i'm convinced it's either a bad ground common to all those modules or a bad power wire that's common to all those modules. No one can diagnose since it's only doing it when it rains.
 
johnnyroastbeef said:
Every time it rains hard overnight and I start my truck in the morning i get the ABS light light, Trailer Brake fault, no 4wd avaible, and no traction control lights. so now i'm convinced it's either a bad ground common to all those modules or a bad power wire that's common to all those modules. No one can diagnose since it's only doing it when it rains.
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They dont have a hose they can soak the truck down?
 
johnnyroastbeef said:
Every time it rains hard overnight and I start my truck in the morning i get the ABS light light, Trailer Brake fault, no 4wd avaible, and no traction control lights. so now i'm convinced it's either a bad ground common to all those modules or a bad power wire that's common to all those modules. No one can diagnose since it's only doing it when it rains.
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When parked in the rain? That should be easy to replicate.

Driving in the rain would be a little harder, but you could park the truck in a car wash.
 
Hey there, just wondering if anyone figured out what the problem was ? I just had my 2019 ram3500 do the exact same thing
 
@Mrb0697 yes i did. Turns out this is super common to these trucks. On my front right ABS sensor, (that black wire that connects to your front brake caliper,) had rubbed through the insulation and was touching the frame. Apparently the hot wire the powers the ABS is the same hot wire that powers all the other modules like the trailer brake, the front collision stuff...so that's why 37 CEL lights come on the dash..
The wire was actually rubbing the frame where i had installed my leveling kit. So if you follow the ABS wire from the front wheel up PAST it's plastic connector, the short is right above where the loom touches the frame.
Let me know if any of that isn't clear and I can hopefully explain it better.
 
johnnyroastbeef said:
@Mrb0697 yes i did. Turns out this is super common to these trucks. On my front right ABS sensor, (that black wire that connects to your front brake caliper,) had rubbed through the insulation and was touching the frame. Apparently the hot wire the powers the ABS is the same hot wire that powers all the other modules like the trailer brake, the front collision stuff...so that's why 37 CEL lights come on the dash..
The wire was actually rubbing the frame where i had installed my leveling kit. So if you follow the ABS wire from the front wheel up PAST it's plastic connector, the short is right above where the loom touches the frame.
Let me know if any of that isn't clear and I can hopefully explain it better.
Click to expand...
Noo that’s a great description thank you, I’m gonna check it out later and see if that’s my issue as well, thank you again
 
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