07 MDX - seat and steering wheel settings don't work - Acura MDX Forum : Acura MDX SUV Forums
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post #1 of 13 (permalink) Old 10-12-2012, 10:00 PM Thread Starter
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07 MDX - seat and steering wheel settings don't work

This is a bizarre problem, so any insight on the cause and repair would be greatly appreciated. on my 07 MDX the seat settings no longer work when I press the button. They also don't work when I unlock the doors with my keyless entry and insert the key into the ignition. The DO work if I set the positions, turn off the car, but don't lock the door. In the last scenario, the seat, steering wheel, and side-view mirrors return to their set positions when I insert the key into the ignition. The dealer service rep told me that it was probably due to a broken motor in one of the side-view mirrors. I'm not sure I believe that, but if it is true it sounds like a terrible design. Has anyone had this problem, and does anyone know how to fix it?

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post #2 of 13 (permalink) Old 10-12-2012, 10:46 PM
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It may be true.
In my 2008 same thing happened and the problem was actuator in the mirror.
Luckily it was under warrenty...having said that actuator motor is very easy to change. I did mine in less then 30 min.

Do a search on memory seats or mirror actuator motor on this site.

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post #3 of 13 (permalink) Old 10-13-2012, 08:28 PM
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the seat settings and the mirror positions are all interconnected on the same circuit. so if one of the components is acting quirky is messes with the whole thing. one ofmy side mirror motors was on it's way out (had it replaced under warranty). my SA told me that the system is all linked together: the key fob talking to the car, the mirror and seat settings, steering wheel...if one goes goofy, then the steering wheel stops telescoping and the seat settings stop working.

check your mirrors when you put the car into reverse. see if the mirrors tilt down like they are suppose to. clicking or stuttering or getting stuck are not normal. if all is well...then the key fob is not syncing with the car. you may need to re sync the key fob to the car in this case.

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post #4 of 13 (permalink) Old 10-14-2012, 05:20 PM
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I'm having the same issue with my 2007. Keep us posted on your quest for answers.
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post #5 of 13 (permalink) Old 10-15-2012, 02:43 PM
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I have a 2008 and had the memory recall problem. My steering wheel would never come back to where I had adjusted. The dealer replaced both actuator motors on the mirrors and it worked for about a day or two. My warranty is over now and I've gotten use to pressing the memory button every time I get into the car.

Well, fast forward to 10 months later and I brought my car in for the transmission update and p/s change and they told me that my battery was weak and "can" cause memory recall not to work. I replaced the battery with an Interstate Megatron and my memory seat, mirrors, steering has worked for about 2 weeks now. So if anyone is still having problems after the mirrors motors are replaced, check the battery.
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post #6 of 13 (permalink) Old 10-18-2012, 06:00 PM
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I've had a problem with the steering wheel not telescoping completely when I start the engine before it is done telescoping and randomly (with cold weather when it has been sitting a day or two) I have to always press the memory button to get it to go the rest of the way. I took it to the dealer one day when it did it every time, they couldn't find anything after a half-hour of those failures and then it didn't do it again for months.

I've had 3-4 mirror actuators replaced, battery cables, the ENTIRE steering column, and just last week the memory module (after they had 8 error messages in the car's computer). The next day, it failed again.

This will likely be a TSB someday if there are enough '07s even around for Acura to care. Something is wrong and they don't know what it is. I've had Acura extend my warranty for this issue.
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post #7 of 13 (permalink) Old 10-18-2012, 08:27 PM
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Since I can remember my MDX will move the settings, but it takes me probably 5-6 presses of the button to get the settings finalized. Basically every time I push the button the mirrors and seat move a little, then it stops. I have to push the button repeatedly to get the positions to change incrementally.

Sometimes I even have to open and close the door to get the buttons to work again, but they eventually do. I've never mentioned it to the dealer since I only change the positions probably once a week if that much, and I don't want them taking apart my door for a small issue.

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post #8 of 13 (permalink) Old 10-19-2012, 12:18 PM
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There is a TSB: B09-047


Symptoms are mirror chattering when they move, failure to move the steering wheel, mirrors and seat when a key is inserted, driver door opened or seat button position pushed.

Acura recommends replacing both mirror activators. I'm going to try this for my 07.
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post #9 of 13 (permalink) Old 11-12-2012, 12:01 PM
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Kryptyde - Did you resolve the issue once you replace the mirror actuators?
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post #10 of 13 (permalink) Old 11-12-2012, 02:45 PM
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i had the pass. side mirror actuator replaced during the summer, and mentioned the driver's side mirror not working. they checked the DS mirror and it was behaving. my key fob intermittently wasn't talking to the car still after the PS mirror was fixed. i had mentioned this to the dealer already.

i went in recently for service and told them about the DS mirror and the keyfob. they checked again and sure enough the DS mirror wasn't working at all. they replaced the mirror actuator on the DS. so far, the key fob is talking to the car fine and my settings are engaging like they are suppose to.

if it starts to go goofy again, then i'll suspect the battery (when the battery starts going bad, electronics in the car start to act weird, lights flicker, car hard starts...any combo at any time). crappy OEM batteries.

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post #11 of 13 (permalink) Old 11-12-2012, 03:56 PM
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post #12 of 13 (permalink) Old 11-16-2012, 07:12 AM
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Just in case there is any question, I can confirm that the replacement of the mirror actuators solves this issue. It happened to me once as well as to 2 of my coworkers. In each situation, it came down to the mirror actuator having issues. I actually had the lead tech come out to explain the ins-and-outs of the issue, but since this occurred 3 or so years ago, I can't remember the details. Since the actuators were replaced on my X, I have had no issues with the memory functions. Sadly, my passenger side mirror has begun chattering again... Thank goodness for my Acura Care warranty. =)

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post #13 of 13 (permalink) Old 05-20-2014, 12:21 PM Thread Starter
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Thumbs up It was the mirror!

Sorry I never updated this. The problem was the mirror motor. The wiring is linked through the motor module, so a faulty motor affects a lot of different electrical functions. Replacing was easy - just be careful to not use tools with sharp edges and make sure you have something soft under the mirror in case anything slips out and falls to the floor.
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