Autocar Acx, model years 2011 to 2012. Filed by Autocar, Llc and reported to NHTSA on 8 February 2012. 269 vehicles potentially affected.
What the notice says Autocar is recalling certain model year 2011-2012 acx heavy-duty class 8 vehicles, manufactured from december 22, 2010, through december 5, 2011, and equipped with bendix atr-6 antilock traction relay valves. in extremely cold conditions, these bendix relay valves may potentially develop internal leakage. internal …
Is your vehicle included? Check with your VIN at NHTSA, or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on.
Autocar's own number for this recall: A-1201. That is the number on the owner letter and on the dealer paperwork. 12V046 is the number NHTSA gave the same campaign, and the number this page is filed under. They are one recall, written two ways.
What owners ask about this recall
- Which vehicles does recall 12V046 cover?
- Autocar Acx, model years 2011-2012.
- What is wrong with them?
- AUTOCAR IS RECALLING CERTAIN MODEL YEAR 2011-2012 ACX HEAVY-DUTY CLASS 8 VEHICLES, MANUFACTURED FROM DECEMBER 22, 2010, THROUGH DECEMBER 5, 2011, AND EQUIPPED WITH BENDIX ATR-6 ANTILOCK TRACTION RELAY VALVES.
- What can happen if it is not put right?
- UNEXPECTED CONTINUOUS BRAKE APPLICATION CAN CAUSE THE BRAKES TO OVERHEAT AND LEAD TO A FIRE. UNEXPECTED CONTINUOUS BRAKE APPLICATION CAN CAUSE THE DRIVER TO LOSE CONTROL OF THE VEHICLE, INCREASING THE RISK OF A CRASH.
- Is there a fix yet?
- Yes, and it is free. AUTOCAR WILL NOTIFY OWNERS, AND DEALERS WILL PROVIDE A TEMPORARY REPAIR UNTIL BENDIX DEVELOPS A PERMANENT REMEDY. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON AUGUST 8, 2012. OWNERS MAY CONTACT AUTOCAR AT 1-765-489-5499.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on. Autocar calls this recall A-1201, which is the number on the owner letter and the dealer paperwork.
Answered from the register this site holds. NHTSA is the record to act on.
What the authority says can happen if this is not fixed: “UNEXPECTED CONTINUOUS BRAKE APPLICATION CAN CAUSE THE BRAKES TO OVERHEAT AND LEAD TO A FIRE. UNEXPECTED CONTINUOUS BRAKE APPLICATION CAN CAUSE THE DRIVER TO LOSE CONTROL OF THE VEHICLE, INCREASING THE RISK OF A CRASH. ALSO, THE BRAKES MAY B…”
affected
in the notice
caught
| Campaign | 12V046 |
|---|---|
| Filed by | AUTOCAR, LLC |
| System at fault | Service Brakes, Air:Supply:Check Valve |
| Reported to NHTSA | 8 February 2012 |
| Model years | 2011-2012 |
| Vehicles named | AUTOCAR ACX |
What the notice says today
The consequence
UNEXPECTED CONTINUOUS BRAKE APPLICATION CAN CAUSE THE BRAKES TO OVERHEAT AND LEAD TO A FIRE. UNEXPECTED CONTINUOUS BRAKE APPLICATION CAN CAUSE THE DRIVER TO LOSE CONTROL OF THE VEHICLE, INCREASING THE RISK OF A CRASH. ALSO, THE BRAKES MAY BE APPLIED WITHOUT ILLUMINATING THE BRAKE LIGHTS, FAILING TO GIVE PROPER WARNING TO OTHER DRIVERS.
The remedy
AUTOCAR WILL NOTIFY OWNERS, AND DEALERS WILL PROVIDE A TEMPORARY REPAIR UNTIL BENDIX DEVELOPS A PERMANENT REMEDY. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON AUGUST 8, 2012. OWNERS MAY CONTACT AUTOCAR AT 1-765-489-5499.
What it said before
This campaign is in the register but not yet in the dated wording archive, so we cannot yet say whether its text has moved. It enters the archive on the next pass.
This is one of 353 notices in the record whose component field names service brakes, air. Across that group the median wait before owners were written to was 43 days.
Last checked . No change has been recorded in the wording.
The models named here, across their whole recall history
How to cite this record
Quoting the wording on this page means quoting a version, so the date belongs in the citation:
CarsMultiverse, recall 12V046, wording as read on 17 September 2026. https://carsmultiverse.com/recall/12v046/
The cross-border matches used on this site are deposited as a citable dataset: doi:10.5281/zenodo.22087136. The recall wording itself is published by the national authority named above and is theirs, not ours.
The recall record and its wording are published by the US National Highway Traffic Safety Administration and are US Government public domain. The dated archive, the comparison and any before-and-after above are CarsMultiverse. How fresh every engine behind this page is, is public on the status page. To check a specific vehicle, use NHTSA’s own VIN lookup.
Other Autocar notices we hold
- 26V501: 2023-2027 ACTT terminal tractors
- 26V215: 2025-2026 ACX (Xpeditor)
- 26V055: 2023-2026 ACX (Xpeditor)
- 25V875: one 2024 E-ACTT terminal tractor
- 25V746: 2025-2026 ACX (Xpeditor)
- 25V679: 2024-2026 ACX (Xpeditor) and DC (Legend)
- 25V660: 2023-2026 ACX (Xpeditor) and DC (Legend)
- 25V451: 2012-2025 ACTT (Xspotter)
All 118 Autocar campaigns we hold · Every manufacturer in the record
The fingerprint of this notice
We take a SHA-256 of each of the three blocks of text the authority publishes and keep the first eight characters. As we last read campaign 12V046 on 23 August 2026, they were:
- Defect summary
26c69acd - Consequence
fca530ba - Remedy
08364d18
We first read this notice on 21 August 2026. It has not moved since. If it ever does, these characters will not match, and the change will be dated here.
The wording we hold for 12V046 · how the whole register is watched
This notice names one vehicle among several registers that have written about it. Every notice this site holds for the Autocar Acx, in all seven, is kept on that vehicle's own page, with the newest in each.
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