2018 Acura TLX Service and Repair Manual
The 2018 Acura TLX service and repair manual is matched to this exact year, engine and trim, so the specifications and sequences are the ones Acura published for your car — both the 2.4L I4 and the 3.5L V6, across all four trims.
Engines
- 3.5L V6 — 3471cc (212 cu in), SOHC, naturally aspirated, gas
- 2.4L I4 — 2356cc (144 cu in), DOHC, naturally aspirated, gas
Trims
- A-Spec Sedan 4-Door
- Base Sedan 4-Door
- SH-AWD Sedan 4-Door
- Advance Sedan 4-Door
Known issues on the 2018 TLX. Two recalls are on federal record for this model year. Recall 23V858000 covers the gasoline fuel system, delivery, fuel pump: fuel pump failure can cause an engine stall while driving, increasing the risk of a crash. Recall 23V751000 covers engine and engine cooling, internal hard parts and mechanical: a damaged engine may run improperly or stall while driving, increasing the risk of a fire or a crash. Owners have filed 144 complaints and 42 technical service bulletins have been issued for this model year. The factory diagnostic and repair procedures behind each of those systems are here.
From a routine service interval to a fuel-delivery diagnosis or an internal engine teardown, it keeps you on the Acura procedure and the correct specification for your 2018 TLX.
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 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 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.
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
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.
Service Bulletin - The AWD warning light is on potentially due to water intrusion into the rear differential pump motor connector area that corrodes the terminals.
Service Bulletin - The MIL comes on during vehicle operation due to variations in the purge control solenoid valve spring, the valve wears unevenly and intermittently sticks. This may result in setting DTC P0441 (Evaporative Emission (EVAP)
Service Bulletin - Due to variations in the purge control solenoid valve spring, the valve wears unevenly and intermittently sticks. This may result in setting DTC P0441 (Evaporative Emission (EVAP) System Purge Flow Malfunction).
Owner Notification Letter - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. Acura is providing a product update with new PGM-FI software update to fix this is
Service Bulletin - The engine will not crank on the initial startup attempt after the vehicle has been exposed to precipitation and then freezing temperatures. Water can enter the starter motor. In cold temperatures the water can freeze, pr
"Customer letter - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. Acura is providing a product update with new PGM-FI software update to fix this issue. In a
Showing the 8 most recent of 90 technical service bulletins on file with NHTSA.
The contact owns a 2018 Acura TLX. The contact stated that after refueling and attempting to park in a parking space, the vehicle experienced a sudden acceleration. The contact mentioned that no safety features were activated. As a result, the contact crashed into a pillar where the vehicle came to a stop and prevented it from then crashing into a building. The air bags did not deploy. The vehicle's front end was damaged, and the contact noticed a significant amount of fluid on the ground undern
My car slid off of the road during a blizzard and hit a tree head on. My front end had smashed in and the car was totaled. The airbags did not deploy and the police who arrived on the scene believed that they should have. I brought my car to a body shop to assess the damages as well as look into the issue of the airbags. He told me that all of the crash sensors had gone off and my seat belt had locked up which led him to believe that my airbags should have definitely deployed. The car had no war
On June 1, 2021 at about 9 p.m. the hood popped up, then the truck latch, the speedometer was reading a different speed than the cruise control without any interference, and the bluetooth and entertainment center were not operating correctly, yet no codes or warning lights. On resuming travel on I-80 a semi started flashing his lights and veered out of the way so I slowed, and the parking brake engaged without my use of the parking brake as I was travelling at 80 mph, slowed to 45 with the semi
The contact owned a 2018 Acura TLX. The contact stated that the vehicle caught on fire while parked in the driveway. The origin of the fire was unknown. The vehicle was unoccupied during the fire. The location of the fire was between and underneath the shifter and the cup holder. The fire was extinguished by itself. A fire department report was not filed. A police department report was not filed. The vehicle was destroyed. The approximate failure mileage was 150,000.
The car failed to turn back on after the auto stop fuction turned the engine off. This left me stranded at a green light. After a few seconds the car put itself in neutral and I slowly coasted to the side of the road as I was on a hill. It would not start for around 30 seconds, remained in accessory mode with the engine off. Finally it started and I cautiously drove home. The oil and coolant levels are still perfect and I got the battery tested. Not sure why it would not start back up.
The contact owns a 2018 Acura TLX. The contact received notification of NHTSA Campaign Number: 23V751000 (Engine and Engine Cooling). The contact stated that when the vehicle was started, the vehicle was idling roughly. Additionally, the accelerator pedal was depressed and there was an abnormal knocking sound coming from the engine. The contact stated that the knocking became faster and louder while depressing the accelerator pedal. The vehicle was taken to a dealer where it was diagnosed and de
THE REAR SEAT ANCHORS TO INSTALL A CHILD SAFETY SEAT ARE NOT ACCESSIBLE IN THE 2018 ACURA TLX. YOU CANNOT TRANSPORT A SMALL CHILD UNDER 2 IN THE CAR. REPORTED TO ACURA 12/14/2017. NOTE: THE HOOKS ARE TOO FAR UNDER THE SEAT AND CANT BE REACHED!!!!
Vehicle is having problems w original recall issues. Car stopping on its own on the highway, car says it’s on E all the time but has gas, car hesitates continually and sometimes just stops, electrical system is having major glitches, transmission and engine having major issues with hesitation and delay. I’ve bright it back many times and I’m beyond frustrated with no resolution. It’s unsafe to drive. Problem since day 1 I got the car. I’m scared to drive it.
i took my car to acura carland in duluth georgia and i went initially for a check up on my recall i was notified for regarding my rod bearing and was told that there’s nothing they can do about it and offered to do a wheel alignment on my vehicle and that should help with the knocking noise i had coming from my engine and that i would have to wait till january for anything else regarding my recall. i asked what could i do until then and i was told to keep up with my oil change and that its until
I've had multiple failures on this vehicle. First, the engine had a rod knock and Acura gave me a very hard time approving the repair and eventually replacement of the engine. Second, the ADAS system is not working and is a huge safety concern. I keep getting error messages that my road mitigation and lane keeping assist systems do not work. Third, the ABS module system cannot communicate with my ECU and is not working properly. Another safety concern as this controls a lot of the wheel speed se
Spun rod bearings at 88000 miles
The contact owns a 2018 Acura TLX. The contact received notification of NHTSA Campaign Number: 23V751000 (Engine and Engine Cooling). The contact stated that while driving on several occasions at various speeds and while the vehicle was idling, there was a valve tap coming from the engine compartment, and the vehicle failed to restart. The vehicle was towed to a dealer, where it was diagnosed, and determined that a rod had pushed through the wall of the engine, and the engine needed to be replac
I was driving home from work and I started hearing a knocking noise and I was trying to get off the highway on the next exit but I didn’t make it the engine locked up and jolted. The car went into neutral luckily I was able to coast to the side of the highway.After getting it towed to the dealership they said it was a rod bearing failure and they needed to change the engine block. I had to fight for it to be covered under warranty but finally they covered it and they changed out the engine block
FOR THE PAST TWO DAYS I SEE THE CHECK ENGINE INDICATOR POP UP ALONG WITH TWO ERRORS. "ELECTRIC PARKING BRAKE PROBLEM" AND "EMISSIONS SYSTEM PROBLEM" THIS HAPPEND AFTER DRIVING AND PARKING THE CAR. THE NEXT DAY I TURNED THE CAR ON AND SAW THE ERRORS. NOT SURE WHAT CPULD BE THE CAUSE OF THIS. I RECENTLY PURCHASED THIS UNIT. HAD IT SINCE JULY 2017 WITH ONLY 3228MILES. PLEASE ADVISE. THANK YOU.
Hi, I’m having issues with my fuel pump / engine and I seen online there was a previous recall for this issues regarding my year make and model but when I search my vin it’s not included? Not sure why when I’m having issues related to that exact recall. I believe it can be related. I took it to Acura and they want to charge me 5,000 dollars for repair. I have a 2018 Acura tlx 3.5 v6 which is stated in this photo attached. Can I get some more clarification please? I’m having all issues notated on
Showing the 15 most serious of 93 complaints filed with NHTSA.
