Engine Grinding Noise Problems of Acura MDX

We have experienced many issues with our 2017 Mdx sh-awd. On a cold start when shifting from first to second gear there is a sudden lurch hard shift. Once warm this is still present but not as pronounced. The transmission seems to slip through gears and have sudden downshifts that decelerate the car or the vehicle will lurch forward without having your foot on the gas as it shifts itself into a different gear. When trying to 'punch it' and accelerate quickly it will often hesitate to go into the correct gear then suddenly rev high as it speeds up. Hunting up and down through gears while staying at a constant speed. The navigation system is extremely slow to come up and respond to inputs when the car is started. Acura has claimed this is due to cell phone bluetooth interference. Collision mitigation system has engaged twice. The first time by husband was in a parkinglot driving through a row looking for a spot to park. The car slammed on the breaks with no cars in his path and nearly caused the car behind him to rear end him. The second time I was approaching a stop light to turn right, there was a vehichle in front of me but the distance I was stoping from the rear of that vehichle was not an abnormal or alarming distance. The brakes locked up with lights flashing on the dash and an awful grinding noise coming from beneath the car. On one occasion from a parked position it would not allow us to engage it in drive. It flashed "shift to park" on the dash. It took three attempts to get it to go in to drive. The rear hatch hydrolics had to be replaced within the first 6 months as the power liftgate stopped working. One of the two key fobs also went out on us in the first 6 months, replacing the battery did nothing and the whole fob needed to be replaced.

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I have a major safety issue with my 6 month old Mdx (less than 5000 miles). The car is making grinding noises and vibrates, intermittently. The dealer has dismissed my claims and made minor modifications with insulation, and hoodclips. Nothing has been done to determine the cause of the problem and they pretend that there is nothing wrong, even though the service manager has heard it on more than one occassion. The care has been brought to the dealership four times over the course of the past 6 months and they have held my car in service for over 30 days. When we attempted to pick up the car last night, there was now a new extremely loud noise with every time I attempted to break. The on-duty sales manager heard the noise and insisted that I leave the car for service. Today, the dealership is refusing to address this new issue, and still ignoring the old issue, which was caused while my car was in their service department for the past month. The car is unsafe to drive and I feel taken advantage of by Acura. The dealership is also saying "their hands are tied. " I have attempted to call their national customer service line and they have given me the run around, insisting that all of their supervisors and case manager are in meetings. How do I address this issue? please help in this matter. If you read on-line many other people are having issues with the newly redesigned 2014 Mdx, produced at a new alabama plant. Acura needs to recall this model, before people are killed on the road.

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Hello, I am a very unhappy frustrated 2005 Acura Mdx owner. My car 2005acura Mdx at 82k miles, I noticed car shifting gear was not shifting smoothly. Having difficulty while shifting gear & which went worse & very stiff. Also, a grinding noise coming, while accelerating at low speeds ( 25-40mph). It started to happen almost every time I accelerate the car or holding this speed on a slight incline level. I have had my mechanic to look at it & was told this noise is a transmission/torque converter problem. It's common to Acura Mdxs. & also, advised to take it to Acura dealer. On oct-2009 car was placed for service @ authorized Acura dealer. Where dealer state that it¿s out of company warranty. The gear shift cable as well as transmission was replaced with 3-year warranty Acura dealer at my (owner) expense 5k. Again, in June-2012 @ 89k mileages, same problem started. My car shift gear was not shifting smoothly. My car needed excessive force in order to shift gears. Again, car was taken to an authorized Acura dealer and the gear shift cable was replaced. Dealer state that the gear shift cable was covered with rust. Which I believe the failure was a Acura design flaw. The vehicle was repaired second time at my expense($400. 00) for the same problem or cause. Recently, again (sept-2012) same strange vibration/grinding noise started. It sounds identical to the issue I was having previously. However, this types of failure recurring every few months later. Unfortunately, I found the same problem still exists. It is very frustrating and feel very nervous while driving with my family. I even get scared to drive this Acura SUV in case it will stop on the middle of the way, while driving. I¿m requesting you( NHTSA) to take this serious and possible life threatening matter with Acura and make them accountable and responsible for it.

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Grinding noise on Acura Mdx 2005 model. Had the car for two years when problem started. The dealer could never identify the problem. Only when the car was out of warranty did they finally say that the transmission had to be replaced. I am the original owner and my car has 75k plus, but this problem started way before. This repair will cost me at least $5000. I'm sure Honda knew about this problem and decided to ignore it. I feel cheated! Honda must take responsibility for selling faulty cars and not owning up to it. I'm a million percent sure the dealers also knew it and didn't say anything about it. They are negligent as well. I am sure I am not the only one with this complaint.