Recall 10V536 affects 1,760 2010-2011 Mack Cxu and Pinnacle (Cxu) trucks for misaligned battery box lid brackets. Repair is free at any franchised Mack dealer.
Mack is recalling 1,760 2010-2011 Cxu and Pinnacle (Cxu) heavy trucks because rear hold-down brackets can keep the battery box lid from seating correctly. If the lid comes off while someone uses the step, that person can fall from the vehicle and be injured; the Mack dealer repair will be free once available.
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What's wrong?
The battery box on the 2010-2011 Mack Cxu and Pinnacle (Cxu) trucks holds the truck's starting batteries and shields the electrical connections from road spray, vibration, and debris. Its lid is held down by rear brackets, which are supposed to clamp the cover in the correct position so it sits flat on the box.
On affected trucks, those rear hold-down brackets are rotated too far forward. That position interferes with the lid instead of securing it cleanly, so the battery box cover does not seat the way it was designed to. A lid that is not seated correctly leaves the battery box less protected and gives the cover less secure contact with the box.
There is no warning sign before failure. During a walkaround, the lid can appear misaligned, raised, or hard to latch, but the recall record does not identify a driver warning light or in-cab alert for this condition.
Who's affected?
Spans both Cxu and Pinnacle (Cxu) trucks across the 2010 and 2011 model years, with the same battery component listed for each.
| 2010 Mack Cxu | battery |
|---|---|
| 2011 Mack Pinnacle (Cxu) | battery |
| Units affected | 1,760 |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
When the rear hold-down brackets are out of adjustment, the battery box lid can come off as a person steps on the step. That creates a fall risk from the vehicle and can result in personal injury. Use extra care entering and exiting until the truck is inspected. Repair will be free at any franchised Mack dealer once available.
What should I do?
- Check your VIN to confirm your 2010-2011 Mack Cxu or Pinnacle (Cxu) is included in this recall.
- Contact a franchised Mack dealer to schedule the free rear hold-down bracket inspection and adjustment that helps the battery box lid seat securely.
- Bring the recall notice if Mack mailed one. If not, reference recall number 10V536 when you call.
- Use caution when stepping on the battery box step until the bracket adjustment is complete.
What happens at the repair
At the dealer, a Mack technician inspects the rear hold-down brackets that secure the battery box lid. If the brackets are rotated too far forward, the technician adjusts them so the battery box lid can seat correctly. Mack's remedy says the inspection and adjustment are free of charge, and the safety recall began on December 1, 2010. Contact Mack Trucks with repair-process questions.
Timeline
| October 27, 2010 | NHTSA published the recall |
|---|---|
| December 1, 2010 | Owner notification mailed |
Frequently asked questions
What is recall 10V536?
Recall 10V536 covers 1,760 2010-2011 Mack Cxu and Pinnacle (Cxu) heavy trucks with rear hold-down brackets for the battery box lid that can be rotated too far forward. If the lid does not seat correctly, it can come off when someone steps on it.
What should I do if my 2010-2011 Mack Cxu or Pinnacle (Cxu) is on this recall?
Check your VIN to confirm your specific truck is included in recall 10V536. If it is, contact a franchised Mack dealer to schedule inspection and adjustment of the rear hold-down brackets. Reference recall number 10V536 when you call. The repair is free.
Is the recall repair free?
Yes. Mack's recall remedy says dealers will inspect and adjust the rear hold-down brackets as required free of charge. A franchised Mack dealer handles the recall repair, and owners can contact Mack at 1-800-866-1177 with recall questions.
What is the safety risk?
The safety risk is a fall injury. If the battery box lid is not properly seated, the lid can come off when a person steps on it, causing that person to fall from the truck. The dealer fix addresses the bracket position that lets the lid seat correctly.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/10V536000 |
|---|---|
| Mack customer service | 1-800-866-1177 |
| NHTSA recall # | 10V536 |
| NHTSA recall # (full) | 10V536000 |
Source documents
-
Download Recall Investigation Document (PDF) (PDF) - Download Recall Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Defect / Noncompliance Notice (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 3, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →