2009 Acura MDX - Ratings, Complaints and Recalls

"the battery has been drained on three separate occasions this year (2021). i replaced the battery after the first occurrence. each time i have had to use a battery jump to restart the vehicle which sufficed to get it operating and return home. on the last occasion, the car started to display dash board warning messages before arriving at home after driving only 15 miles. this came with a fully charged battery installed to get the car restarted. previously i could see no error codes, but following this latest incident the awd error code 77-01 is displayed by an obd reader. the vehicle began to run roughly and flashed many dashboard warnings as the battery began to draw down to zero power. latest incident required a battery replacement instead of just a jump to restart."

"hfl module # 39770-stx-a011-m1 stopped working preventing connection to my cell phone. 2009 mdx with 92,004 miles. called all the dealerships in my area and others on the internet and no one has the module. i was told by them it's on national back order for sone time now ( 2/5/2020 ) . doing further research brought to light there is a 2016 or 2017 class action suit on this hfl module/system failing and draining power from the battery, causing premature failure of said battery, which also happened to me as well as no start conditions which also has happened to me. so far no stall outs with the vehicle moving. i currently have a hfl module on order from acura and was told because their on back order it could be several months before they get their order. also they want my old module which they added a $50.00 core charge to the price. though there maybe just a few official complaints listed here just check the web. there is obviously a fault in these modules and the manufacture is either doing reverse failure analysis on the returned modules or wirse yet fixing the broken ones and sending them out as the replacements. either way they obviously know is wrong with these modules. this module is not what is considered a normal attrition piece like tires, brakes, light bulbs , belts , hoses. when was the last time you planned on replacing a broken radio in your vehicle, you don't. i shouldn't have to plan or pay to replace my hfl module, quality control and manufacture loyalty to their customers is abismal."

"the bluetooth module drains the battery when the vehicle is turned off and i am afraid that my vehicle could be turned off by draining the battery when running causing a safety issue. i have registered the case with acura customer server and have not helped me with the free replacement. the acura case number is [xxx] 2009 acura mdx awd vin: 2hnyd28679h[xxx] [xxx] information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6). *tt"

"bluetooth handfree link (hfl) in my 2009 acura mdx was draining my battery. i had to call towing service a few times to start the vehicle. when i opened the compartment where hands free link device is located, i noticed that the device was extremely hot (fire hazard). finally, it gave up after a while. this happened after my extended warranty expired at 100k miles. my state (state of illinois) requires using a hands free link while driving, so, i feel acura should recall the hfl unit and replace this free of charge to comply with the state law. will appreciate if nhtsa looks into this case and requires acura/honda to issue an immediate recall. this is a very common issue in many acuras based on my google search."

"my mdx has only 62,400 miles and today i got a message "check starter system" due to the hfl module is draining the battery. luckily the car was in my garage at the time. i had to charge the battery so i could start the car. all the info i have read online states the the hfl module gets real hot and can cause fire. my garage is under my bedroom. this is a part made by johnson controls, acura needs to recall this item."

"bluetooth stopped working and a few weeks later, my car wouldn't start. i replaced the battery and a few days later the car stalled on me as i was pulling out of my spot!!!!! i went to the acura dealer and explained to the guy that my battery kept draining. he asked me if my bluetooth stopped working, i was shocked because i hadn't mentioned any issues with my bluetooth but i let him know that in fact, the bluetooth had stopped. the rep said it's a common problem in my vehicle. had to replace the bluetooth and paid $600!!!! my friends sister has the same make car and her bluetooth stopped working and her car battery keeps going dead. it's very scary since apparently i must have started the car right before the battery died again. imagine what would've happened if it had stalled on a highway or a busy street!"

""nox sensor wiring harness chewed by mouse" per acura dealership. there is no evidence of rodent damage or presence elsewhere in the vehicle. according to the acura dealership, there was a problem with the prior models prior to 2009, but my particular car doesn't have the problem. the wiring has been covered by honda rodent deterrent tape as showing in the pictures. i have contacted acura/honda dealerships, their extended warranty customer service and also the irrespective, acura/honda manufacturer customer service. the same thing happened to my other car (honda odyssey 2009) within a span of one week with exactly similar presentation. when i requested information from the above sources, i was told that this was confidential information and is not available for customers and that is it is a rare event and not related to manufacturing defects and also there was no definitive trend in acura/honda(same company) nox sensor wiring harness chewed by rodents and have refused to cover it under extended warranty program to which i have subscribed/purchased. i have another entry regarding the other vehicle. *tr"

"car stalled while driving. towed it to the dealer the dealer repaired the instrument panel following is the statement from dealer 'found instrument internal defective causing vehicle to stall remove and replace gauge recheck operation'. *tr"