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Engine & cooling

2004 Acura MDX Engine problems

Owners have filed 26 complaints about the 2004 Acura MDX's engine & cooling with NHTSA - 15% of all its complaints, most recently on April 3, 2022. They describe 1 crash, 1 fire and 1 injury. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Complaints
26
Recalls
0
Crashes
1
Fires
1
Injuries
1
Deaths
0

Engine complaints

Seats & seat beltsEngine & cooling

Was driving to the store and the vehicle lost all power it will crank and idle but. When u push the gas pedal it will not accelerate all the dash lights are flashing or staying on as of right now the vehicle is on the side of the road I had to walk 15 miles cause I left my phone at home so I couldn't call no one and. My 11 year old daughter was with me so she had to walk as well

Filed Incident Seat belts · Unknown or other · EngineNHTSA 11459360
Transmission & drivetrainElectrical systemEngine & cooling

Hose connection failure between radiator and transmission cooler causing radiator fluid to mix with tranny fluid with no dash indicator of problem.. In motion lost power and would not move from 1st gear. Broke down completely in need of transmission work and new coolant system due to hose connect failure.

Filed Incident Power train · Electrical system · EngineNHTSA 11163931
Electrical systemBody, doors & structureEngine & coolingFire

ELECTRICAL SHORT

Filed Incident Electrical system · Structure · EngineNHTSA 11161296
Engine & cooling

Vehicle slips out of gear intermittently after deceleration, usually while driving in town (under 45 mph). Torque converter shudder or vibration between 35-40 mph.

Filed Incident EngineNHTSA 11103551
Driver assistanceBrakesEngine & cooling

Tl* the contact owns a 2004 acura mdx. While driving approximately 35 mph and making a right turn, there was a clunking noise coming from the engine. The vsa warning indicator illuminated, the brakes applied independently, and the vehicle stopped. The contact had to depress the accelerator pedal to continue driving the vehicle. The vehicle was taken to an independent mechanic who diagnosed that the stability assist system failed and needed to be replaced. The independent mechanic replaced the brake pads, discs,...

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calipers, and fluid; however, the failure recurred. The independent mechanic informed the contact of nhtsa campaign number: 13v092000 (service brakes, hydraulic, traction control system) and to contact the dealer. The dealer was not contacted. The contact called the manufacturer and was informed that the vin was not included in the recall. The approximate failure mileage was 41,179.

Filed Incident Electronic stability control (ESC) · Traction control system · Service brakes · EngineNHTSA 11014012
Engine & cooling

Tl* the contact owns a 2004 acura mdx. While driving approximately 3 mph attempting to park, the contact heard a noise emerging from the engine compartment. The contact also stated that pieces of the serpentine belt were shredded and hanging from the engine. The vehicle was parked at the contact's house. The vehicle was not diagnosed nor repaired. The manufacturer was notified of the failure. The vehicle was not repaired. The approximate failure mileage was 150,000.

Filed Incident EngineNHTSA 10889382
Electrical systemEngine & cooling

Tl* the contact owns a 2004 acura mdx. The contact stated that the vehicle failed to start. The battery was jumped and the vehicle was able to start. The failure recurred multiple times. The dealer stated that the battery needed to be replaced. The vehicle was not repaired. The contact also stated that there was oil leaking from the engine and the smell of fumes emitted into the vehicle. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 188,000.

Filed Incident Electrical system · EngineNHTSA 10865760
Transmission & drivetrainEngine & cooling

There is a grind/ roaring sound when I am going about 40 mph. It definitely sounds like the transmission. I researched it on line and have determined that thousand of people like my self are experiencing the same issues, but honda has not recalled these cars. My question is does someone's transmission have to cause an accident and possibly a fatality before this issue is handled. Most people have had to have the torque converter replaced at their own expense, some after threatening lawsuits have received some assistance. What can we do? *Tr

Filed Incident Power train · EngineNHTSA 10703146
Engine & coolingTransmission & drivetrainVisibility & wipersEquipment & accessories

Over a period of time, beginning about the date and vehicle mileage stated above, I experienced a shudder and corresponding noise as the transmission tried to shift gears. Similar to the sensation of driving across closely-spaced rumble strips, the shudder and noise seemed to vary in length of time depending on speed. This occurred many times before I became concerned and started researching during which I found dozens of similar accounts in various on-line forums. Eventually I took my mdx to the dealership for a...

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diagnosis. Disappointingly similar to many accounts I read on the internet, and despite my description of the problem, the acura dealership was unable to reproduce the problem, further noting all 19 items on their multi-point inspection report as "checked and ok", including the transmission. Soon thereafter, the drive train completely froze up as I discovered after starting the car in my driveway (thankfully, not while driving the car). Despite using the transmission shift lock release button (coincidentally -?- The subject of a recall for which I have received a notice from acura), the car remains immobile because I am unable to get the car out of park and put it into gear to return to the dealership for further diagnosis. My local acura dealership has been unresponsive to my numerous complaints and calls attempting to remedy the problem. The consumer stated the water pump, timing belt, air conditioner, motor mount, front axle seal, rear hvac blower transistor all failed. Upadted 03/11/15

Filed Incident Engine and engine cooling · Power train · Visibility · EquipmentNHTSA 10660836
Transmission & drivetrainEngine & cooling

Reproducibly at automatic transmission shifting speeds between 20-25mph, 30-35mph and 40-45mph there is an audible and palpable shudder as the transmission hesitates prior to shifting. Have brought vehicle to acura dealer 3 times over the past 5 years, every time stating the same complaint, and every time referencing a convincing multitude of acura mdx owners noting a similar problem. Every time acura service states they could not reproduce the problem and nothing is wrong with the vehicle. The last time I even...

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drove the car with their chief mechanic, who verified the problem and stated it must be the torque converter, but acura only performed an automatic transmission flush and reset the transmission computer settings that they charged me for, and neither solved the problem. This is a serious dangerous problem and eventually someone is going to get seriously hurt. Links with multiple owners experiencing the same problem and frustration: http://www.Aboutautomobile.Com/complaint/2005/acura/mdx/automatic+transmission http://repairpal.Com/debris-in-transmission-due-to-failed-torque-converter-clutch-006 http://forums.Edmunds.Com/discussion/12576/acura/mdx/acura-mdx-torque-converter-scam/p3 I also have in my possession an internal acura memo detailing this problem. Many thanks in advance for what I am certain will be a thorough investigation! *Tr

Filed Incident Power train · Unknown or other · EngineNHTSA 10609731
Engine & coolingTransmission & drivetrain

I was moving out of a parking space and bam!...The drop of tranny fluid and radiator fluid on the spot. When I took it to a mechanic, they told me this was the 4th honda car they have had with same problem, they found out in all cases it was the pressurized hose connecting these two important parts had corroded to the point of failure. I have been hearing more about this and it is now disturbing to me. In my case my tranny is fine and all I needed was a new radiator and all new fluids. The car was not able to move and that may have saved the tranny. Got it towed and fixed the next day by trusted shop even though it was almost 800 dollars. *Tr

Filed Incident Engine and engine cooling · Power trainNHTSA 10535319
SteeringTransmission & drivetrainBody, doors & structureEngine & coolingCrash1 injury

I was pulling into drive way when I shut off truck took keys out, shut door, as garage door was opening. Car started rolling back... I opened door tried to press on emerg. Brake with hand as im running with vehicle as it is rolling back, wouldn't stop. I realized the gear wasn't in park, it was in reverse, but with no keys I tried to put gear into park, wouldn't move without keys, I hopped in, put keys in ignition and turned car on, as I was putting the gear in park, the vehicle reared forward and I pressed on...

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breaks but it wouldn't stop. The car was moving forward as I was pressing on the breaks, needless to say, it did not stop until I ran into the garage door as it was coming back down, and both myself were half way into my son's garage door, wall, and shelving, items, all damaged by my rolling backward acura......Because the car was in a fast speed, I tried to avoid going straight into the garage, to avoid going into the bedroom, so I swerved inward toward the wall... The garage door would not lift up off the truck, so I asked my grandson to push on the switch on wall while I lift on the garage door, as we worked together with no keys in ignition, motor off, on the count of 5,4,3,2,1.....I lift, he pushes, and guess what......There goes m car.....Starts rolling back...Right into my son's [parked...Vehicle....Damage...3 Claims in one day.....3 Deductibles in one day......When I called insur...I was asked if vehicle was drivable?... When I started it. It made a loud roaring sound and would not go into reverse.......Then I found out a recall was out on my vehicle.... And I hate to think that all the times I drove in the vehicle with my grandson.....I just had 2 back surgeries and 2 knee replacements,... As I was running with my vehicle , I injured my back and knee and I cannot work for a while.. All thanks to acura... *Tr

Filed Incident Steering · Power train · Structure · EngineNHTSA 10520046
Transmission & drivetrainEngine & cooling

I had noticed a shuddering at 1200-1400 rpm. Dealer said it was likely the torque converter. Recommended not doing anything at this time. In the past month, I've had two occasions while in drive from a stop, when I stepped on the gas the car did not move; the engine just revved. The first time I put the car into park, shut off the car. I restarted and all was well. This next time I was going around a curve at about 10-15 mph, when the car revving response to my pressing the gas pedal, but did not accelerate. ...

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As if it had shifted into neutral. I switched into neutral and back into drive, and it re-engaged. Lots of similar concerns on my investigation on the internet. If this is a known problem to acura/honda, why has there not been a recall or a fix? *Tr

Filed Incident Power train · EngineNHTSA 10519366
SteeringElectrical systemEngine & cooling

On 11.11.11,Our acura lost power coinciding with the dashboard warning lights not functioning properly to warn of the sudden loss of control, heavy smoke emission, transmission failure,engine damage & inability to drive our vehicle, creating the possibility of a crash, injury or fatality. Despite acura's knowledge of transmission failures based on an acura service bulletin alert, we incurred $5500 in expenses/damage to our vehicle.We had not been notified of the faulty torque converter/transmission parts...

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previously&acura has avoided taking full responsibility for a known problem in which many consumers have been fully reimbursed for this damage. We are issuing this complaint&requesting reimbursement for our expenses due to acura's full knowledge of this recurring situation,their negligence in alerting consumers&their neglect in resolving the repair in accordance with their responsibilities.We would request that acura be held responsible in notifying all acura owners of the service bulletin/recall pertaining to this faulty transmission. We also feel strongly about the electronic/computer dashboard warnings that gave no indication of damaged or faulty parts creating the dangerous&unsafe situation we had experienced while driving our vehicle in traffic when this incident occurred&are filing a complaint according to the seriousness of this portion of the incident as well. We have much documentation&would be more than willing to provide whatever would be necessary to ensure that this complaint is productive in enforcing acura's responsibility of these two incidents,to further make aware&avoid such incidents&in hopes of being reimbursed for our unexpected expenses as well. In purchasing an acura,we had done so with the peace of mind that we had purchased a well made,safe vehicle from a company that stands behind it's product.We are saddened that this has not been the case. *Tr

Filed Incident Steering · Electrical system · EngineNHTSA 10509141
Engine & coolingTransmission & drivetrain

Internal leak in radiator causing a leak of coolant to transmission fluid and vice versa, damaging transmission and rendering car not drivable within moments.

Filed Incident Engine and engine cooling · Power trainNHTSA 10461784
Transmission & drivetrainEngine & cooling

I was told my radiator bladder exploded causing all fluids to mix, thus I now need a new radiator and a new transmission, cost of repair is $4600. My 04 mdx has 137k this should not happen, there are numerous cases of this same issue all over the internet acura forums, why has there not been a recall on this issue, there is clearly an issue with the radiators. I need to have the radiator replaced, all fluids drained and then flushed 5-8 times to ensure all the contamination is gone, then new fluids put back in along with a replacement transmission. There has to be numerous complaints about this, please help! *Tr

Filed Incident Power train · EngineNHTSA 10460662
Engine & coolingTransmission & drivetrain

There is a shuddering noise / vibration coming from the engine compartment at speeds between 25-45 mph. *Tr

Filed Incident Engine and engine cooling · Power trainNHTSA 10441416
Engine & cooling

My mechanic determined my front and side motor mounts need replacing, and mentioned it being common in my vehicle. I've since found others with acura mdxs with the same problem. Never needed mounts replaced in any other vehicles owned. I believe it to be an inherent defect acura must address.

Filed Incident Engine and engine coolingNHTSA 10370269
Engine & coolingTransmission & drivetrain

Sudden transmission failure on the highway. Lose all power from the engine to the wheels. Has to pull over suddenly in traffic to avoid being hit by other cars traveling at normal speed. The transmissions on honda/acura v6s apparently have systematic problems. *Tr

Filed Incident Engine and engine cooling · Power trainNHTSA 10319660
Engine & cooling

Took car in for inspection and the dealer told us our front engine mount needs replacing. Never had to deal with this with our previous cars. Shouldn't acura take responsibility for their mistakes. *Tr

Filed Incident Engine and engine coolingNHTSA 10259351
Engine & cooling

1. The front and side motor mounts on my '04 acura mdx are broken as well as the rear a/c blower. Problem was first diagnosed by a private mechanic who was replacing the brakes for us. Aside from the brakes, the auto has been dealer maintained incl. Oil changes. Acura confirmed the diagnosis and refused to offer any "good will" discount for the repairs. 2. Front mount broke first, followed by the side (within 2-3 wks.) Due to the additional strain placed on it by the front mount not functioning. 3. Nothing...

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as of yet. Still attempting to appeal the decision regarding "good will" assistance. I am in contact with the dealership trying to resolve, but not very optimistic. Both motor mounts need to be replaced along with the rear a/c blower. *Tr

Filed Incident Engine and engine coolingNHTSA 10239815
Engine & cooling

On a trip to a car wash, my acura mdx got locked with the engine running which caused a back up on the line and loss of business for the car wash. I had to hail a cab to go home and get the spare key and compensated the owner for the loss. When I got home and read the owner's manual I was very surprised to find out that the vehicle can be locked using the master lock button in an open passenger door even with the key in the ignition and the engine running. It was then that I realized that the car wash attendant on...

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the passenger side must have locked the vehicle. This is a flawed design and can potentially cause safety problems. I now have to carry a spare key when I go to a car wash. I brought this to the attention of the manufacturer and got no response. *Ak

Filed Incident Engine and engine coolingNHTSA 10110109
Engine & cooling

The check engine light frequently blinks and the car occasionally misfires while the car is accelerating or under heavy engine load (e.G., Accelerating onto the freeway or driving on interstate through the mountains). These conditions appear to happen more frequently the whether is cool and damp. When the vehicle misfires, the engine hesitates and various dashboard warning indicators light. The engine hesitation and distraction from the warning lights makes it difficult to complete merger into traffic.

Filed Incident Engine and engine coolingNHTSA 10098584
Engine & cooling

I bought a new acura mdx 2004 and in two days the engine malfunctioned, light appeared. I went to the dealer, who said that I need to make an appointment to fix the problem, eventhough as a new customer I was not satisfied with the car, indicating a problem within two days of driving less than 100 miles. I did some research on the problem and found that the issue I am facing is a known issue within the range of my vin number. But acura dealer and the customer relationship office in la denied that they know...

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about the problem. I also found a similar the issue documented on your website. As a consumer what are my rights here ? A) can I get acura to provide me the level of quality and service I am expecting b) reject the product if they failed to notify me about the problem before I bought the product(fair disclosure) about the recall c) they didn't fix the problem before I bought the car, even though they were aware of the problem. I know someone who bought the *same* model car from the *same* dealership and their car also falls in the *same* vin range which is documented to have the problem. They told them that its a known issue when they called the acura dealer service, and ask them to come down for service. But when I ask the same question they deny knowing any issue with the car, they even showed me a print out which says nothing is flagged against my vin number. I have currently given my car for service, and I am on a loaner car from the dealer. Still waiting for the car to be serviced. Also I am concerned that if the problem reappears, it will further erode my confidence in the car and the dealiership. I am also extremely dissatisfied as a consumer and would like to know what should I do so that other acura consumers don't have to go through the pain like I am going throguh and also get compensated for the damages and inconvinience caused by this incident.*Ak

Filed Incident Engine and engine coolingNHTSA 10075033
Engine & cooling

The acuramdx that I bought is for model year 2004, there is kind of a loud droning noise from the exhaust system, that was identified by the reading honda dealer and furthur confirmed by the mfg's rep, but the problem did not get fixed since the mfg. Has no fix for the problem and the mfg. Is not willing to adress the problem or solve it or refund the money.*Ak

Filed Incident Engine and engine coolingNHTSA 10060247

Acura MDX engine complaints by year

MDX engine problems, every year

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Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data

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