Pre-purchase inspection checklist — 2012 Thor Motor Coach Ace
The 2012 Thor Motor Coach A.C.E. has a known recall regarding its electrical system, specifically the Battery Control Center, which might fail while driving. Ensure thorough inspection of this and other potential issues before purchasing to prevent unexpected repairs.
Known issues to inspect
Battery Control Center failure
How to check: Inspect for any warning lights or electrical malfunctions.
Battery-related start failures
How to check: Check engine starts reliably and battery condition.
Test-drive walkthrough
- 01
Cold start
What to check: Ensure the engine starts without hesitation.
Red flag: Difficulty starting
- 02
Initial idle
What to check: Monitor for any odd noises or vibrations.
Red flag: Unusual engine noise
- 03
First acceleration
What to check: Check for smooth power delivery.
Red flag: Power lag or surging
- 04
Braking
What to check: Test brakes for stability and noise.
Red flag: Squeaking or pulling
- 05
Cruising
What to check: Listen for any electrical issues developing.
Red flag: Electrical system failure
Questions for the seller
Use this exact phrasing.
- Has the recall work been completed?
- Have there been any electrical problems?
- When was the battery last replaced?
- Are there any outstanding repairs needed?
Documents to request
Don't sign anything until you have these.
- Recall completion documentation
- Service records
- Battery replacement receipts
- Inspection reports
Generated by gpt-4o on 6/8/2026. Grounded in the NHTSA recall corpus and owner-complaint patterns for the 2012 Thor Motor Coach Ace.