Over The Air System Updates - Vehicles equipped with the System Updates application are capable of downloading and installing Over the Air System updates (OTA). A connection to a Wi-Fi network is needed to perform the update over the air. System updates contain upgrades that fix operational errors and/or provide a variety of enhancements, which adds new functionality. Information about the various software releases can be found in this document.
full bulletin at NHTSA ↗2025 Acura MDX electrical problems
moderate 26 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Complaints
26
Recalls
0
Avg fix
$850
What stands out
Owners have filed 26 electrical complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering electrical on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Over the Air System Update - System updates contain upgrades that fix operational errors and/or provide a variety of enhancements, which adds new functionality. Information about the various software releases can be found in this document.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The dominant issue across these 22 complaints is the auto idle-stop system failing to restart the engine at traffic lights and stops. Owners describe the engine shutting off as designed, then refusing to crank when they release the brake or press the accelerator. The starter makes clicking or buzzing sounds, or nothing happens. Some need multiple restart attempts; most require a full power-down and reboot of the entire vehicle to get moving again. This leaves drivers stranded in active traffic, at dangerous intersections, and on highways with oncoming vehicles swerving around them.
A related but separate failure is spontaneous engine stall while driving or idling, without any warning light. Owners lose power steering and brakes briefly—a serious safety hazard in stop-and-go traffic.
Dealerships have replaced starters and batteries multiple times, often based on guesswork ("bad battery" diagnosis), but owners report the no-start and stalling issues returning or persisting. One owner states that Honda and Acura replace starters with the identical part number, so the problem comes back within 10–12 months. Acura has told at least one owner this is a "known issue with no resolve."
Infotainment screens go black, audio cuts out, and steering controls become intermittent. One moonroof motor has failed multiple times.
Safety-critical systems—steering control assistance modes, brake function—are also reported as either inactive or functioning erratically.
Same Acura MDX electrical reports on nearby years: 2022
Failure modes owners describe
Auto Idle Stop / Start-Stop System Failure to Restart
When the auto idle-stop system engages and shuts off the engine at a stop, the vehicle frequently fails to restart when the driver releases the brake or attempts to resume driving. The engine either will not crank, makes clicking or buzzing sounds, or requires multiple restart attempts and a full power-down cycle to revive the vehicle.
When: At traffic lights and stops; occurs randomly but repeatedly. Multiple reports from mid-2025 through early 2026, with owners reporting 2-4+ instances.
Symptoms owners cite: Engine fails to restart after auto idle-stop shutdown; Clicking or buzzing sounds from starter area; Vehicle becomes disabled in traffic; Requires full power-down and restart to recover; No warning lights or messages before failure; Sluggish cranking on initial attempt
Repairs/costs cited: Dealership inspections found no fault codes or issues. Battery tested and confirmed functional in multiple cases. Starter replaced in at least two owner cases; issue recurred or persisted after replacement.
Recalls/TSBs owners mention: Acura has acknowledged this as a 'known issue with no resolve' per owner report. No recall or TSB documented in narratives. One owner states Honda and Acura replace the starter with the same part number, leading to recurrence within 10-12 months.
Unexpected Engine Stall During Driving or Idle
Vehicle engine stalls without warning while driving, at idle, or during stop-and-go traffic. Stalls occur independently of the auto idle-stop system and at random. Engine loss creates temporary loss of power steering and brakes, posing significant collision risk in active traffic.
When: Random occurrences; reported throughout 2025 and into 2026. Multiple instances per owner over weeks to months.
Symptoms owners cite: Engine shuts off unexpectedly while driving or at idle; Loss of power steering and braking momentarily; No prior warning lights or messages; Occurs in traffic, on highway, and at traffic lights; Vehicle disabled until power cycle or manual restart
Repairs/costs cited: Dealership testing and battery diagnostics performed; no faults found. One owner reports multiple attempts to reproduce issue in dealership with no success.
Recalls/TSBs owners mention: Acknowledged as 'known issue' by Acura per customer complaint. No TSB or recall provided in narratives.
Starter and Battery-Related Failures
Starter motor malfunction or false battery diagnosis. Starters replaced but failures recur within 10-12 months using identical part numbers. Battery replaced in at least two cases; issues persisted afterward, suggesting battery replacement was not the root cause.
When: Initial failures reported within first few months of ownership (2025); recurrence after 10-12 months in at least one case.
Symptoms owners cite: Sluggish cranking or no crank condition; Clicking sounds when attempting to start; No-start condition after shutdown; Buzzing resistance sounds during start attempts
Repairs/costs cited: Starter replaced; issue returned or remained. Battery replaced under warranty; did not resolve stalling or no-start issues. One owner reports dealership stating battery was bad; subsequent testing found battery was functional.
Recalls/TSBs owners mention: Covered under warranty. One owner reports Honda and Acura replacing starters with the same part number, leading to reoccurrence.
Infotainment and Audio System Malfunction
Infotainment screen intermittently goes black, loses connectivity, or fails to respond. Audio shuts off or does not respond to commands. Hard reset and software updates do not resolve the issue.
When: Intermittent; reported within first year of ownership.
Symptoms owners cite: Screen goes black or will not connect; Audio shuts off or becomes unresponsive; Unable to view directions or hear music; System unresponsive to driver input; Steering wheel control buttons intermittently fail to control infotainment
Repairs/costs cited: Hard reset and software update performed; issue not resolved.
Moonroof and Sunshade Motor Failure
Power motor for moonroof and sunshade assembly fails to operate, with failure occurring multiple times within the first year of ownership.
When: Within first year of ownership.
Symptoms owners cite: Moonroof or sunshade motor does not function; Multiple failures reported in same vehicle
Synthesized from 26 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 8 most recent
I was at a red light. My auto idle kicked in. I went to turn it off and Either simultaneously or right before I hit the idle off button my car stalled. It took several attempts to turn back on and a bunch of codes threw. I almost got rear ended. This is a known problem. Ive contacted acura / honda via email as well.
This has happend twice in the past 2 months, I came to a red light and the auto stop/start engaged automatically. When the light turned green and the vehicle was supposed to engage it turned off completely, all lights on the dash came on and it and wouldn't restart. Had to open the drivers side door and try to restart the vehicle, it restarted after a few tries. Very dangerous intersection I…
i purchased the vehicle March of 2025. Since I have been to the dealership on multiple occasions. I was there less than a week after purchase because there was a noise coming from the front tire the dealership balanced the tire. The noise was still there so i returned and the next time they replaced the front wheel bearings. I still have issues with the steering wheel shaking so they replaced all…
2025 Acura MDX Aspec Advanced - Experienced 3 instances of failure to restart after engine idle shutoff or normal shutoff. Periodically starting the vehicle makes a buzzing or resistance type of sound, but usually will start. 1) 8/8/2025 Returning from shopping turned off vehicle in driveway to open hatch to unload items. Upon re-entering the vehicle (~5 mins) the push start failed to start -…
When the auto idle stop system is enabled my Acura will shut down completely when the vehicle comes to a complete stop and the idle stop system will not reengage as it should when your foot comes off the brake and the car shuts completely off and goes into park. This has happened 3 times, the last one occurring on a very busy highway, and I'm thankful I wasn't rear ended by the car behind me.…
The power and motor on the moonroof and sunshade has failed multiple Times in the first year of owning the car.
When driving and the stopping the auto start/stop feature does not rengage and the car places itself in park and becomes disabled and difficult to restart. When driving on a major highway when I was in traffic the car shut down, put itself into park and would not restart upon removing my foot from the brake. It then gave numerous error messages and would not respond to any commands. Traffic…
While driving in traffic, my vehicle suddenly shut down without warning. The engine stalled, and I lost power to steering and braking, creating a serious safety risk for myself and other drivers around me. The problem has occurred more than three time. At the time of the failure, there were no warning lamps a message display showing to continue to drive depress brake pedal and push switch there…
Had electrical trouble with your 2025 Acura MDX?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2025 Acura MDX?
It's a documented issue but not catastrophic. 26 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2025/Acura/MDX.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.