Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2020 MDXs with a client complaint of the lid light (inner taillight) inop. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
full bulletin at NHTSA ↗2019 Acura MDX electrical problems
moderate Owners of the 2019 Acura MDX have filed 31 NHTSA complaints about the electrical at roughly $850 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See electrical across all vehicles →
Complaints
31
Recalls
0
Avg fix
$850
| Model year | electrical complaints |
|---|---|
| 2015 MDX | 13 |
| 2016 MDX | 23 |
| 2017 MDX | 31 |
| 2018 MDX | 23 |
| 2019 MDX (this page) | 31 |
| 2020 MDX | 32 |
| 2022 MDX | 10 |
| 2023 MDX | 6 |
1fire
When does it fail?
Of the 31 electrical complaints filed for the 2019 Acura MDX, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Owners have filed 31 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.
Among the 20 model years of Acura MDX in our records for electrical problems, this one ranks #3 by owner-complaint volume.
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.
Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2020 MDXs with a client complaint of the lid light (inner taillight) inop. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
full bulletin at NHTSA ↗Service Bulletin - Under certain circumstances, after coming to a stop and engaging idle stop the vehicle may not restart automatically due to excessive cylinder pressure and/or low cranking torque. Typically, the client can immediately restart the vehicle by selecting Park and pressing the ENGINE START/STOP button. Acura is extending the warranty coverage for valve adjustment and starter replacement related to this condition to 10 years from the original date of purchase with no mileage limitation.
full bulletin at NHTSA ↗Service Bulletin - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. Typically, the customer can immediately restart the vehicle by selecting Park and pushing the ENGINE START/STOP button.
full bulletin at NHTSA ↗Service Bulletin - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. Typically, the customer can immediately restart the vehicle by selecting Park and pushing the ENGINE START/STOP button.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2019 Acura MDX shows a pattern of electrical and fuel-system failures that dealers have not resolved. The most common complaint involves the auto idle-stop feature: when the engine shuts down at traffic lights and drivers release the brake, the car shifts into neutral instead of restarting, traps the vehicle in traffic, and becomes unresponsive until the driver cycles the ignition off and back on. This has happened to owners at busy intersections and highway on-ramps—dangerous situations where multiple repair attempts (battery replacement, software updates, transmission work, fuel pump replacement) have not fixed the problem.
Engine stalling while driving is another major issue. Owners report the engine dies at highway speeds, floods the dashboard with warning lights (ABS, VSA, EPS, SH-AWD, Collision Mitigation, etc.), and sometimes shuts down so completely that doors and windows lock owners and their children inside the vehicle. Acura acknowledges a fuel pump defect recall (21V215000) that can cause stalling, but owners say the recall parts have been installed without resolving their symptoms.
The infotainment system fails intermittently, leaving displays black and inaccessible—disabling climate controls and safety settings. One owner reported a pop and smoke coming from the dashboard CD slot while driving at highway speed, with an electrical fire odor lingering in the vehicle afterward.
Dealers have generally been unable to duplicate failures during service visits or find actionable diagnostic codes, leaving owners frustrated and unsafe.
Same Acura MDX electrical reports on nearby years: 2016 · 2017 · 2018 · 2020 · 2022
Failure modes owners describe
Auto idle-stop/restart failure with neutral shift
When the automatic idle-stop feature engages at traffic lights or stop signs, the engine fails to restart upon driver releasing brake pedal. The transmission shifts into neutral without driver input, locks up, and remains unresponsive. Vehicle becomes immobilized in traffic until electrical system resets or ignition is cycled off and back on.
When: At traffic lights and stop signs; sometimes during hot weather or after long drives; reported at 32K-59K miles
Symptoms owners cite: Engine fails to restart when idle-stop ends; Transmission shifts to neutral unexpectedly; Electrical system lockup/unresponsiveness; Vehicle immobilized in traffic; Engine revving without engaging drive; Battery and brake system warning lights; Message displayed: 'Park and Restart' or 'Shift to Park'
Codes mentioned: ACC, LWKS, U3006-16
Repairs/costs cited: Dealers have attempted: battery replacement (multiple reports), software updates, transmission valve adjustments, fuel pump replacement; failures persist. No lasting fix identified.
Recalls/TSBs owners mention: Honda/Acura recall 21V215000 issued (fuel system); some owners' VINs not listed despite identical symptoms. Acura stated issue caused by cell phone connection (disproven by owners); advised software update (reported ineffective).
Random stalling while driving with cascading warning lights
Engine stalls unexpectedly during highway driving or general operation. Vehicle loses power and acceleration, then cycles through multiple warning lights simultaneously (ABS, VSA, Hill Start Assist, Collision Mitigation, Road Departure Mitigation, Adaptive Cruise, Lane Keeping, Brake System, EPS, SH-AWD, Keyless Start). Vehicle may shut down completely, rendering doors, windows, and other systems inoperable.
When: While driving at highway speeds; random intervals; reported at 32K-59K miles; sometimes after long drives or hot weather
Symptoms owners cite: Engine stalls while driving; Loss of power and acceleration; Multiple dashboard warning lights illuminate simultaneously; Engine knocking/rattling noises upon stall; Power loss to doors, windows, electrical systems; Passengers locked inside vehicle; Vehicle becomes uncontrollable
Codes mentioned: ACC, LWKS, Emissions system problem codes, Electronic brake problem codes, SH-AWD fault codes
Repairs/costs cited: Recalled parts replaced at dealership with no resolution. Local repair shops unable to identify cause or find actionable diagnostic codes. Service stations confirmed battery and alternator functional.
Recalls/TSBs owners mention: Acura/Honda recall 21V215000 references fuel pump defect that can cause engine stall, fire, or crash risk; owner reports parts replaced but problems persist. Manufacturer acknowledges manufacturing defect but unable to repair.
Infotainment system periodic black screen/unresponsiveness
Navigation and on-demand multifunction display screens intermittently go black or become unresponsive, disabling access to climate control, communications, navigation, and vehicle safety settings. Occurs during city and highway driving, at highway speeds, and while stationary. May recover after vehicle restart or after extended time.
When: Intermittent; during driving and stationary; reported at 35K-59K miles
Symptoms owners cite: Navigation screen goes black; On-demand multifunction display becomes unresponsive; Climate/temperature controls unavailable; Safety setting access unavailable; Driver distraction from screen failures; Temperature exposure risk (unable to defrost/warm car); Backup camera remains on after restart
Repairs/costs cited: Acura stated issue caused by cell phone connection; disproven by owners (fails even when no phone present). Multiple repair attempts have failed. ODMD and hard disk drive sent to Alpine for diagnostics.
Recalls/TSBs owners mention: Known issue among multiple Acura/Honda model years (same model year variants); multiple ongoing class action lawsuits; arbitration ruled in owner favor but manufacturer unable to repair.
Dashboard electrical fire/short in radio assembly
A single 'pop' sound from inside dashboard followed by grayish smoke pouring from CD slot of on-demand multifunction display. Burning plastic or electrical insulation odor present. Navigation and display screens went black immediately, then both became solid black and remained inoperative. Smoke and odor stopped when engine turned off.
When: While driving at highway speed; single incident reported
Symptoms owners cite: Pop sound from dashboard area; Smoke from CD slot; Burning plastic/electrical odor; Navigation screen black; Display screens black and unresponsive; Odor of electrical fire remained in vehicle
Repairs/costs cited: Dealer isolated cause to short in radio. ODMD and hard disk drive sent to Alpine for root-cause analysis.
Recalls/TSBs owners mention: Acura engineering consulted; wiring inspected and tested by dealership.
Collision Mitigation System false activation with unintended hard braking
Automatic Collision Mitigation System engages full brake lock (100%) without driver input, causing sudden complete stop. System provides false positives when turning corners in center lane (beeps and pulses brakes). One incident caused complete stop with driver impact to steering wheel.
When: Reported intermittently; one incident during intersection crossing
Symptoms owners cite: Complete brake lockup without driver input; False positives when turning corners; Brake beeping and pulsing inappropriately; Driver impact injuries to head/steering wheel; Excessive system sensitivity
Repairs/costs cited: No repair reported; owner requested permanent disable option or software fix.
Fuel gauge fluctuation and false empty reading
After refueling, fuel gauge fluctuates to empty or reads incorrect amount of fuel in tank. No warning light illuminates. Referenced in NHTSA recall 21V215000 (fuel system, gasoline).
When: After refueling; reported at 44K miles
Symptoms owners cite: Fuel gauge fluctuates to empty after refueling; Gauge reads incorrect fuel level; No warning light illuminates
Repairs/costs cited: Failure could not be duplicated at dealer.
Recalls/TSBs owners mention: NHTSA recall 21V215000 issued but owner's VIN not listed for recall.
Door lock malfunction with key fob
Vehicle doors remain unlocked when locked via key fob. Owner believed someone had entered vehicle and changed settings on multi-information display that should not have changed.
When: Reported; failure mileage approximately 40,400 miles
Symptoms owners cite: Key fob lock command ineffective; Doors remain unlocked; Unauthorized setting changes on MID display
Repairs/costs cited: Vehicle not diagnosed or repaired.
Recalls/TSBs owners mention: Manufacturer notified; dealer informed owner that setting changes should not appear on MID screen.
Multiple simultaneous fault codes (emissions, brake, SH-AWD) without identified root cause
Multiple warning lights illuminate simultaneously for emissions system, electronic brake, and SH-AWD malfunctions. Vehicle continues to function normally but warning lights come and go intermittently. Low voltage code (U3006-16) on electronic control module detected despite battery and alternator confirmed functional.
When: Spontaneously; reported across multiple owners; one incident at 59K miles
Symptoms owners cite: Emissions system problem warning light; Electronic brake problem warning light; SH-AWD malfunction warning light; All lights illuminate simultaneously; Codes come on and off intermittently; Low voltage ECM code despite good battery and alternator
Codes mentioned: Emissions controls fault, Parking brake fault, SH-AWD system fault, U3006-16 (low voltage ECM)
Repairs/costs cited: Battery and alternator tested and confirmed functional under load test; alternator charging at 14.2 volts (normal). No identified repair.
Recalls/TSBs owners mention: Reported as known issue among 2019 Acura RDX and MDX models; manufacturer has no clear repair or resolution method.
Complete loss of power at highway speed with vehicle bounce
All dashboard lights illuminate and vehicle loses power to maintain speed while driving at 70 mph on highway. Engine eventually shuts down on service road. Vehicle bouncing up and down while still moving at highway speed.
When: While driving at 70 mph on highway
Symptoms owners cite: All dashboard lights illuminate; Vehicle struggles to maintain speed; Complete engine shutdown; Vehicle bouncing while in motion; Loss of control concern
Tail light malfunction with incorrect recall eligibility
Inner rear tail light not functioning. Owner believes VIN should be included in NHTSA recall 19V-256 but Acura states VIN does not apply and shows no recall.
When: Reported; recall date 03/28/2019
Symptoms owners cite: Inner tail light not functioning
Recalls/TSBs owners mention: Acura claims VIN not eligible for recall 19V-256 despite matching symptoms.
Synthesized from 31 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 6 most recent
The automatic collision mitigation system had a complete 100% lock up of my brakes during a cross of an intersection . Although I was wearing my seatbelt the force of the stop threw my head into the steering wheel. It is a complete miracle that the car behind me did not rear-end me. This system routinely gives false positives when going around corners when you are in the center lane and it…
Since the purchase of my Acura MDX 2019, the following problems have been reported to the dealership and to Honda Manufacturing Inc. without any resolution. The dealer shop has replaced recall parts, but the problems persist and have not gone away. The vehicle stalls and stops working while driving. The engine makes knocking/rattling noises upon becoming disabled while driving.The engine would…
Turned on my car last night and many lights appeared including emissions system problem, electronic brake problem and SH-AWD malfunctioning. All the lights came on at once. According to forums, this is happening with many Acura RDX, MDX models and manufacturer does not have a clear way to repair or resolve the issue. My car has had all the routine maintenance and is scheduled for the 2…
The back inner tail light on my car is not working, which is the following recall, however, according to acura, my vin does not apply and does not show a recall. I believe this is an error since I am having the exact issue and my vin should be included in this recall. NHTSA RECALL NUMBER:19V-256 MFR CAMPAIGN ID:M49 CAMPAIGN DESCRIPTION:2014-19 MDX Tailgate Inner Taillight Safety Recall RECALL…
During normal driving transmission will shift to Neutral, locks the system, and engine does not start when automatic idle stop had been engaged at stoplight or stop sign. Instead of restarting the engine, the feature causes the transmission and electrical system to lockup taking quite a bit of time to convince the car to restart.
While in traffic the auto start sometimes fails to engage and the car stalls. Battery lights come on and the car goes into neutral on its own. I have to sit there and wait about 5 minutes in traffic before it restarts. Battery checked out fine. It has happened 3 times now. This is dangerous, and can/will cause a collision.
Had electrical trouble with your 2019 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 2019 Acura MDX?
It's a documented issue but not catastrophic. 31 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?
Based on the 31 complaints filed, electrical issues most often appear around 31,314 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
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/2019/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.