“Service Electronic Braking System”

**Mariner** · 10-05-2019

Well I got it about 3 days ago, “Service Electronic Braking System” on the heads up display, as well as the illumination of the ABS light and traction light. It happens when I start the truck, go fast, slow, hit bumps, go in reverse, sometimes it’ll stay on, sometimes it’ll flicker, and some days it wont come on at all!

A quick web search pulled up about a billion links for it, surprisingly none on this forum though, hence why I’m posting this in case others here are searching for it.

This morning on my way to the dealer, I was also receiving the “Service Anti-lock Braking System.” I tried cruise control while it was all in alarm... no beans.

So this is very common for our trucks. In fact I saw 1500s with the issues, Jeeps, Chrysler’s, etc. so it’s a wide spectrum issue.

First thing my dealer does for a service is plug into the computer and I can’t remember the exact code but I had a stored ABS alarm. I’ll update this thread when I get my truck back, but here it is! Another owner with the ABS alarms.

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**Mariner** · 10-05-2019

Quick update after a call from Dodge.. dealership had to order me a new ABS module as well as a new brake controller.

Seems to be right along with the forum reports, but most guys say their dealer just reflashes the module and that seems to fix it.

My dealer seems to want to go more to the root of the issue, so hopefully the few days it’ll be at the dealership will be worth it!

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**Mariner** · 10-05-2019

My mistake on the earlier post, I must have misunderstood the adviser on the phone.

Just picked up the truck!

They must have sent the part by helicopter from Orlando to get there in time LOL because I’ve never had them “order a part” before and had it come in same day!

Anyways, actual fix for the truck was to replace the ABS module and control unit, and it’s good as new!

For now... so if this comes up for anybody else, take it right to the dealership and they’ll fix you up.

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**Derrick Hamlett** · 04-26-2020

Hello Mariner,

I have a 2013 Didge RAM 1500 4x4 Bighorn .

I have had this Service Electronic Braking come up on my dashboard several times starting a couple months ago and know coming up at least 5 to 10 times a day.

Did dealership repair your issue and did your Warranty cover it or pay out of pocket?

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**Mortifera** · 06-12-2022

Old thread but I get to throw my name into this hat as well.

I have an appointment with the dealer in IL next Friday.

I shipped my 2018 3500 from Hawaii to Tacoma and picked it up on the 2nd of June. Drove all the way to IL with mostly no issues. While we were in the Black Hills the "Service ABS" and "Service Electronic Braking System" warning start to chime a bit but went away and didn't come back on until IL. Truck has 17,000 miles on it and 2,100 of those miles were put on in the last 7 days. My motorcycle is still in the middle of the Pacific Ocean so I can't even ride that in the meantime

Some of yall followed my posts when I was replacing my interior because of faulty equipment that had since been replaced with a new part # and my entire interior was soaked. Have updated parts with the ABS and HCU been created since 2017-2018? Anybody know if there is currently a shortage on them? Dealer said just about everything that has a chip of some sort is on backorder for a long time.

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**Chrisn162001** · 06-12-2022

Originally Posted by Mortifera

Old thread but I get to throw my name into this hat as well...

I have an appointment with the dealer in IL next Friday.

I shipped my 2018 3500 from Hawaii to Tacoma and picked it up on the 2nd of June. Drove all the way to IL with mostly no issues. While we were in the Black Hills the "Service ABS" and "Service Electronic Braking System" warning start to chime a bit but went away and didn't come back on until IL. Truck has 17,000 miles on it and 2,100 of those miles were put on in the last 7 days. My motorcycle is still in the middle of the Pacific Ocean so I can't even ride that in the meantime

Some of yall followed my posts when I was replacing my interior because of faulty equipment that had since been replaced with a new part # and my entire interior was soaked. Have updated parts with the ABS and HCU been created since 2017-2018? Anybody know if there is currently a shortage on them? Dealer said just about everything that has a chip of some sort is on backorder for a long time.

2018 trucks seem to be the worst year for hcu’s.

In 2019 I was replacing at least 3 a week most under 30k miles.

They aren’t back ordered I still replace a few a month. still the same part number and not updated from what I see.

Replaced mine a few weeks ago for the second time first one at at 32k second one at 80k miles.

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**Mortifera** · 06-16-2022

Thank you for the reply!

I’ll have to see what they say.

I’m glad they aren’t on back order if that is what is wrong with it.

It was getting a little aggravated that this seemed to be a lemon of a truck.

I’ve spent a lot of time replacing inoperative failed parts.

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**Mortifera** · 06-17-2022

Out of warranty by about a year.

It’s getting replaced next Monday.

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**allbizns** · 07-17-2022

Hey, guys figured I'd chime in here as well.

My truck started throwing the same message the other day when my wife was driving it.

Mine is a 2018 2500 4x4 42,000 miles.

I pulled the codes and what I found was.

C0020 pump motor control electrical failure
U0002 C buss off performance
U0126 Steering angle sensor loss of comm.

This warning comes and goes.

I can get it to throw the waring sometimes in the driveway in park, no brakes applied, just turning the steering wheel.

My question is @Chrisn162001 will a bad HCU throw these other codes, or could I also have a steering angle sensor issue.

All the function buttons in the wheel work as expected.

Also, looking for the HCU on the internet Mopar online parts says that 68143491AB has superseded the HCU 68143491AA I noticed above where you stated there was no update as far as you were aware.

I am just wondering if this is the correct part.

Any advice will be helpful.

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