2018 Acura MDX Service and Repair Manual
The 2018 Acura MDX factory service and repair manual is matched to this exact year and covers both powertrains — the 3.5L V6 and the 3.0L Sport Hybrid V6 — across all three trims, so the specifications and procedures are correct for your engine and trim.
Engines
- 3.5L V6 — 3471cc (212 cu in), SOHC, naturally aspirated, gas
- 3.0L V6 — 2997cc (183 cu in), SOHC, naturally aspirated, hybrid
Trims
- SH-AWD Sport Utility 4-Door
- Sport Hybrid Sport Utility 4-Door
- Base Sport Utility 4-Door
Known issues on the 2018 MDX. Four recalls are on federal record for this model year: moisture entering the tailgate lid lights, which can cause a loss of the taillights and reduce the vehicle’s visibility; a fuel pump failure that can stall the engine while driving; a manufacturing defect in the engine’s internal hard parts that can make the engine run improperly or stall, with a risk of fire or crash; and timing belt tooth separation that can also stall the engine. Owners have filed 261 complaints and Acura has issued 86 technical service bulletins for the year.
From a routine service interval to a timing belt replacement, a fuel pump diagnosis, or a hybrid-system fault, it keeps you on the OEM procedure and the correct specification for your specific 2018 MDX.
Honda (American Honda Motor Co.) is recalling certain 2016-2018 Acura MDX, 2015-2019 Acura TLX and 2015-2017 Honda Accord vehicles, equipped with a 3.5L V6 engine. Particulates in fuel may adhere to the internal components of the fuel pump, reducing its performance.
Reduced fuel pump performance can result in an engine stall, increasing the risk of crash.
Honda will notify owners, and dealers will update the fuel injection engine control unit (FI-ECU) software and, if necessary, replace the fuel pump, free of charge. The recall began March 25, 2019. Owners may contact customer service at 1-888-234-2138. Acura's recall number for this recall is P3W. Honda's recall number for this recall is N3X.
Honda (American Honda Motor Co.) is recalling certain 2014-2019 Acura MDX and 2017-2019 Acura MDX Sport Hybrid vehicles. Moisture may enter the tailgate lid lights, possibly causing a loss of the tailgate lid lights and the taillights.
Loss of the taillights reduces the vehicle's visibility, increasing the risk of crash.
Acura will notify owners, and dealers will modify the tailgate lid lights and install updated gaskets and a wiring sub-harness or will replace both tailgate lid lights. The repairs will be performed free of charge. The recall began May 7, 2019. Owners may contact Acura customer service at 1-888-234-2138. Acura's number for this recall is M49.
Honda (American Honda Motor Co.) is recalling certain 2018-2019 Acura MDX and Honda Pilot vehicles and 2019 Acura RLX, RLX Sport Hybrid, TLX and Honda Odyssey and Ridgeline vehicles. The timing belt teeth may separate from the belt.
Teeth separation from the timing belt may result in an engine stall, increasing the risk of crash.
Honda will notify owners, and dealers will inspect the vehicle and replace any affected timing belt free of charge. Vehicles receiving a replacement timing belt will also have the engine inspected and any damaged components will be replaced for free. The recall began June 7, 2019. Honda owners may contact customer service at 1-888-234-2138. Honda's number for this recall is L4M. Acura owners may contact customer service at 1-888-234-2138. Acura's number for this recall is Z4L.
Honda (American Honda Motor Co.) is recalling certain 2017-2019 Acura MDX, 2017-2018 Acura MDX Sport Hybrid, 2018-2019 Honda HR-V and Honda Odyssey, and 2016 Honda HR-V vehicles. The rear brake caliper pistons may have an insufficient coating, causing gas pockets to form, reducing brake performance. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 135, "Light Vehicle Brake Systems."
A reduction of braking performance increases the risk of a crash.
Owners will be notified, and Honda or Acura dealers will bleed the brakes, free of charge. The recall began December 11, 2018. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are C31 and L30.
Honda (American Honda Motor Co.) is recalling certain 2018 Honda Pilot and Ridgeline vehicles and 2018 Acura MDX vehicles. The front driver and passenger powered seats in the Honda vehicles and the driver powered seats in the Acura vehicles may have been assembled with improperly manufactured rivets. In the event of a crash, the rivets can break causing the seats not to be secured to the floor. As such, these vehicles may fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 207, "Seating Systems," and 210, "Seat Belt Assembly Anchorages."
In the event of a crash, if the seat does not remain secured to the floor, the seat occupant has an increased risk of injury.
Honda will notify owners, and dealers will replace the driver seat frame assembly in Acura MDX vehicles, and replace the driver and front passenger seat slide rail frames in Honda Pilot and Ridgeline vehicles, free of charge. The recall began May 30, 2018. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall is D0S, and T0T.
Honda (American Honda Motor Co.) is recalling certain 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2016 and 2018-2019 Pilot, 2017 and 2019 Ridgeline, and 2018-2019 Odyssey vehicles. Due to a manufacturing error, the connecting rod bearing in the engine may wear and seize, damaging the engine.
A damaged engine may run improperly or stall while driving, increasing the risk of a fire, crash, or injury.
Dealers will inspect and repair, or replace the engine as necessary, free of charge. Owner letters were mailed March 28, 2024. 2016-2017 Acura MDX owner letters were mailed November 1, 2024. 2016-2020 Acura MDX owner letters are expected to be mailed in mid-December 2024. Honda began mailing owner notification letters as of March 18, 2024. 2015-2016 Acura owner letters are expected to be mailed mid-December 2024, 2018 Acura TLX owner letters are expected to be mailed the end of March/early Apr
Honda (American Honda Motor Co.) is recalling certain 2013-2023 Honda Accord, Civic Coupe, Civic Sedan, Civic Hatchback, Civic Type R, CR-V, HR-V, Ridgeline, Odyssey, Acura ILX, MDX, MDX Hybrid, RDX, RLX, TLX, 2019-2022 Honda Insight, Passport, 2020 Honda CR-V Hybrid, 2018-2019 Honda Clarity PHEV, Fit, and 2015-2020 Honda Accord Hybrid, Pilot, Acura NSX vehicles. The fuel pump inside the fuel tank may fail.
Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.
Dealers will replace the fuel pump module, free of charge. Owner letters were mailed September 6, 2024. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are KGC and KGD. This recall is an expansion of NHTSA recall numbers 21V-215 and 20V-314.
Honda (American Honda Motor Co.) is recalling certain 2014-2020 Acura MDX vehicles. Moisture may enter the tailgate lid light assembly and wiring harness, which can cause the interior and exterior lights to fail, including the lid lights, position lights, license plate lights and taillights.
Vehicle lights that fail to illuminate can decrease visibility and increase the risk of a crash.
Dealers will inspect the wiring and install a fuse harness, replace the lid light, and repair the body dust sealer, as necessary, free of charge. Owner notification letters were mailed May 30, 2025. Owners may contact Acura's customer service at 1-800-382-2238. Acura's number for this recall is FLI. Vehicles included in this recall that were previously repaired under NHTSA recall number 19V-256 will need to have the new remedy completed.
Honda (American Honda Motor Co.) is recalling certain 2018-2021, 2023 Acura TLX, 2019-2024 RDX, 2017-2020, 2022-2026 MDX, 2017-2021, 2023, 2025 Honda Ridgeline, 2017-2022 Pilot, 2019-2021 Passport, 2018-2026 Odyssey, 2019-2022 Insight, 2019-2021 HR-V, 2018-2020 Fit, 2020-2022 CR-V Hybrid, 2017-2022 CR-V, 2017-2018, 2021 Civic Type R, 2017-2021 Civic hatchback, 2016-2020 Civic coupe, 2016-2022 Civic, 2017-2022 Accord Hybrid, and 2016-2022 Accord vehicles. The front passenger seat weight sensor may crack and short circuit, which can cause the air bags to deploy unintentionally during a crash.
Air bags that deploy unintentionally during a crash increase the risk of injury.
Dealers will replace the seat weight sensors, free of charge. Owner notification letters were mailed July 7, 2026. Owners may contact Honda's customer service at 1-888-234-2138. Honda's numbers for this recall are BOL, WO9, OOA, WOM, XOH, NOC, POD, BOE, UOF, POB, EOG, AOI, QO8, TOJ, DO7, and SOK. This recall expands previous NHTSA recall number 24V064. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning May 29, 2026.
American Honda Motor Company (Honda) is recalling certain 2016-2022 Honda Pilot, 2017-2023 Ridgeline, 2019-2023 Passport, and 2014-2020 Acura MDX vehicles that were sold in Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, or Wisconsin. The rear subframe may corrode at the suspension mounting points, which can result in rear suspension component failure.
Failure of rear suspension components, such as the rear control arm, can cause a loss of vehicle handling and control, increasing the risk of a crash or injury.
Dealers will inspect the rear subframe and install a rear subframe reinforcement kit and, as necessary, repair or replace the rear subframe components, free of charge. Interim letters notifying owners of the safety risk were mailed July 27, 2026. Additional letters will be sent once the final remedy is available, anticipated in the fall of 2026. Owners may contact Honda's customer service at 1-888-234-2138. Honda's numbers for this recall are AOU and AOT. Vehicle Identification Numbers (VINs) in
Owner Notification Letter - Under certain circumstances, after coming to a stop and the idle stop feature engaging, the vehicle may not automatically restart. Acura is providing a product update with a new PGM-FI software update to fix this
Service Bulletin - An uneven sealing surface allows moisture to enter the inner taillight(s), causing one or both of the inner taillights not to work.
Service Bulletin - An uneven sealing surface allows moisture to enter the inner taillight(s), causing one or both of the inner taillights not to work.
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 res
Owner Notification Letter - An uneven sealing surface allows moisture to enter the inner taillight(s), causing one or both of the inner taillights not to work.
Owner Notification Letter - An uneven sealing surface allows moisture to enter the inner taillight(s), causing one or both of the inner taillights not to work.
Service Bulletin - An uneven sealing surface allows moisture to enter the inner taillight(s), causing one or both of the inner taillights not to work.
Service Bulletin - The AWD warning light is on with one or more AWD DTCs having been set due to water intrusion into the electric oil pump motor connector area corrodes the terminals.
Showing the 8 most recent of 139 technical service bulletins on file with NHTSA.
In San Diego on 11/15/2021, my daughter side swiped a parked vehicle in residential area driving about 30 miles. No airbags deployed. A minute later the car stopped and would not start and started to have smoke and flames come from under hood and through inside windshield and dash. My daughter was able to get out and take her 3 year old son out of his carseat and run for their lives as the car completely became engulfed in flames.Thank God they made it out alive. Police and Fire department showe
PURCHASED ACURA MDX IN JANUARY OF 2018 SO IT IS NOW 3 MONTHS. I BELIEVE THERE IS SOMETHING SIGNIFICANTLY WRONG WITH ITS AUTOMATIC BRAKING SYSTEM. I WAS DRIVING DOWN A HILL ON A RESIDENTAL, FAST PACED ROAD, WITH A GUARDRAIL TO MY RIGHT SIDE AND ANOTHER CAR PASSING ME ON THE LEFT SIDE. WE BOTH WE TRAVELING AT THE SPEED LIMIT OF 40 MILES PER HOUR WHEN ALL OF A SUDDEN MY CAR'S BRAKES WENT ON, CAUSING ME TO SWERVE INTO THE GUARDRAIL. FROM THERE, I WAS THROWN INTO ONCOMING TRAFFIC CAUSING A COLLISON.
The contact owns a 2018 Acura MDX. The contact stated that at an idle stop, he allowed another vehicle to complete a turn. As the contact depressed the accelerator pedal to make a left turn, the vehicle came to an abrupt stop which caused the vehicle to be rear ended by another vehicle. The air bags did not deploy upon impact. No injuries were reported and a police report was not filed. The vehicle was able to drive away from the scene of the accident. The dealer nor the manufacturer had yet to
The contact owned a 2018 Acura MDX. The contact stated that while the vehicle was parked in a garage there was a sudden odor of smoke. The contact stated upon discovering the smoke the contact noticed fumes and flames coming from the engine compartment. The contact stated the vehicle was unoccupied at the time of the fire. The fire was extinguished by the Fire Department however the vehicle was consumed by the fire. There was smoke damage to the home and there was damage to the driveway due to t
MY VEHICLE WAS PARKED UNDER MY CAR PORT IMMEDIATELY AFTER RETURNING FROM THE GROCERY STORE. AS I WAS UNLOADING THE CAR I SAW AND SMELLED SMOKE WHICH THEN ERUPTED INTO A FIRE COMING FROM THE ENGINE COMPARTMENT. WE CALLED 911 AND WHEN THE FD ARRIVED THE CAR WAS TOTALLY ENGULFED AS WAS MY BUILDING. SUSPECT FUEL LINE LEAK. INSURANCE COMPANY INVESTIGATING. FD SAYS ACURA MDX WAS CAUSE OF FIRE. DANGEROUS SITUATION AS NO PRIOR INDICATORS FROM VEHICLE, RECALLS, ETC.. PHOTOS AVAILABLE IF NEEDED. IF GONE U
Fire under the hood of my 2018 MDX - caused by weak battery and overloaded starter. My car was parked in the garage right under my daughter’s bedroom. I pressed the "Start" button on the car and the dashboard started to flash on and off quickly and I heard clicking sounds and other swooshing noises. The car did NOT start but it seemed to keep trying over and over again. I pressed the start/off button repeatedly but the car did not shut off. My wife came out and asked what I was doing and she sme
The contact owns a 2018 Acura MDX. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline) and 23V751000 (Engine and Engine Cooling); however, parts to do the recall repair were unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.
Vehicle experiences dangerous throttle delay from a stop. When making left-hand turns across traffic, pressing the accelerator results in no response for 1–2 seconds. Vehicle hesitates while exposed in intersection, creating risk of collision. Issue has been present since low mileage and not resolved by recall repairs.
The engien keep stalling, prolem accelerating jurky transmisión and this is the only car I have to go work I take the highway everyday I am cosern that something can happend to me.
The contact owns a 2018 Acura MDX. The contact received notification of NHTSA Campaign Number: 23V751000 (ENGINE AND ENGINE COOLING); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.
While preparing to enter the expressway my 2018 MDX stalled and various dashboard lights came on. My family and I drifted into the median while nearly being hit by passing car. It took about 10 minutes before the MDX became operational again. I took it to a local mechanic when we arrived at our destination. They couldn't locate any issues or "bad codes." Since that incident my fuel mileage and shifting has begun to deteriorate. Entering traffic and trying to pass cars has become difficul
Car miss shifts especially in the 25 to 40 mph range. Sometimes hesitates when taking off. Also stays in one gear and will not upshift when entering the Freeway. Very dangerous. I found numerous complaints on the web in reference to these problems, but still no recall??? Have told the dealership about these problems with every service, but they said that there is nothing wrong.
The contact owns a 2018 Acura MDX. The contact stated that while driving at undisclosed speeds, the vehicle failed to accelerate as needed. The accelerator pedal was depressed, but the vehicle hesitated. Additional pressure was applied, and the accelerator pedal was depressed to the floorboard. There were no warning lights illuminated. The contact received notification of NHTSA Campaign Numbers: 23V858000 (Fuel System, Gasoline) and 23V751000 (Engine and Engine Cooling); however, the part to do
GAS STATION FUEL GAS NOZZLE STUCKED/STICKING IN CAPLESS GAS TANK FILLER
Got multiple warnings, systems don't work: Collision Mitigation System, Adaptive Cruise Control, Lane Keeping Asist, Road Departure Mitigation System. All those additional systems designed for safety are no longer working. The front camera failed, as confirmed by the dealer. Part is available for inspection.
Showing the 15 most serious of 163 complaints filed with NHTSA.
