is anyone experiencing issues with the avh-p8400bh and the touch screen not respond to touch intermittently? this happens to me atleast once a week where i cannot change anything on touch screen no matter what source it is on. There isnt any specific way for me to make it happen. i can drive for 2 hours in the trucks and its fine. other times on way home from work (30 minute drive) it will freeze. The only fix so far has been to turn off my truck and back on and back to normal. i called pioneer and they asked if I had a wired remote (for steering wheels controls) which i do and they said to look at it and possibly reprogram or use a different steering wheel control module.

i haven't investigated this yet but will look into it soon.

I've had AVH 8400 about 3 weeks and it has been error free. However, the remote steering wheel controls did give me a lot of funky behavior when I first tried to wire them in. I would pull the controls and run the unit for a couple days to rule the controls out. I would want to know if the unit itself was buggy in order to get that replaced.

I am experiencing the same exact issue you are. I have the AVH-P8400BH wired to the Axxess ASWC in my 07 Civic. I have had all installed since first week of April. It freezes intermittently, but seems to be becoming more frequent as time goes on. When it freezes, the steering wheel controls, buttons on the HU, and remote control continue to work, only the touchscreen becomes disabled. The only way I can reset it is by cutting all power to the HU by turning off my car and restarting. I haven't tried calling Pioneer yet, but if it continues, and I dont find a solution, I will be calling Crutchfield for a replacement. Be sure to

post an update if you try your HU without the steering wheel controls. I will try calling Pioneer and Crutchfield to see if they have any additional

information.

For most of the screen issues I have read or heard about, they seem related to the steering wheel controls. For Ford vehicles and Pioneer HU I went through two SW control products, Axxess ASWC and PAC SWI-PS. I ended up using PAC in my Ford Excursion and I have had no issues with anything once I had it installed and programmed correctly. I know it's a PITA, but I would pull the SW controls if my HU was not working correctly just to know.

I finally had the steering wheel controls removed and my HU still froze. I plan to send out to service. SMH

I am also experiencing this problem. I have the PAC SWI-PS installed in a 2012 Jeep Wrangler. All of the hardware buttons on the head unit and steering wheel controls continue to function once the touchscreen stops responding which is odd. I have disconnected PAC SWI-PS and the touchscreen will still lockup until I turn off the vehicle and turn it back on. The thing is that the touchscreen doesn't really stop responding from what I have found. Try the following:

Hold down the source button until you turn off the device and it goes in to the demo mode.

Tap the screen. You should hear a beep and the demo mode goes away.

The other functions do not work from the main menu (if you want to call it that) but it does respond to the touch on the demo screen so it's still working it's just stops responding on other views.

Anyone else have similar results? The same PAC SWI didn't cause any issues with my prior stereo.

Sent out to service and no problems were found. SMH I put back in my trucka nd just waiting for it to happen again to get it swapped out at audio shop.

Sent out to service and no problems were found. SMH I put back in my trucka nd just waiting for it to happen again to get it swapped out at audio shop.

I am pretty sure its just a software glitch, a firmware update will resolve this and I have no doubt about it. Its not the HU.

I am on my third unit now. Same problems on two of them, the second one was DOA out of the box, bad screen. I got my first one in May, went a while without crapping out. Then would do it a lot. So I sent it back to the guy on Amazon.

The second one had a big grey band of pixels on it. Sent it back.

The third one went in on Monday, and it froze tonight! WTF Pioneer!! I called them last week and they said there are no issues of the AVH8400BH freezing up. The guy I bought from said his contact there said they do have problems. Pioneers answer is to send it to a repair shop, and then for it to come back and freeze again.

I agree though, it has to be a software problem. However why will they not fix it, or admit?

the issue hasn't happened again after the service but im damn sure waiting for that firmware update before my year warranty is up.

Just registered to reply to this, I also have the screen freezing problem, it has happened 3 times in the last month, called pioneer canada and the tech guy said this behaviour would not be a firmware problem, that it hardware, possibly a solder joint, I explained to him that you can cycle the power and it will return to normal and that also you you shut the screen of with the mode button and touch the screen it will come back on, showing that the screen is fine, but the soft keys won't work. I really don't want to disassemble the dash and loose it for a while, if it's just software related.

The guy posting on NASIOC claims to be an installer in Canada, and said the local rep gave him an update for the screen, however he claimed to be sending it to anyone who pm'd him, might be a troll.....

I will take mine to the local service shop next week, and hopefully they can fix it.....

I have been a member of NASIOC since 2005, I sent him a PM earlier today, but no response yet

I seem to have had a lot of spam email since I sent him my address to send the update to. Supposed to get it on Sunday, still no sign. Something smells like TROLL to me.

hi guys, how ya doing.. I have 2 head units one in my 1998 Lincoln Mark VIII and I installed one in my 2001 ford F150 Supercrew.. The one I installed in the Mark VIII back in November I haven't had any problems with the system screen freezing.. But the truck I installed a week ago and already have had the screen freeze every time, mainly when using the Iphone/Ipod and skipping songs... Nothing is different, have both updated the Bluetooth software, the only thing that is different is that on the f150 I bought a cable that was not an pioneer specific oem cd-iu201s... the Lincoln has the oem cable the truck doesn't that is the only difference between the two.. I had an aftermarket cable on the F150 that plugged into the head unit and works the same.. but I'm starting to think this cable is causing this malfunction on my truck.. so I was curious to know the ones that are having this issue do you have the oem cable or an aftermarket cable.. Also, I have no steering wheel controls in either vehicle.. So, I would really like to know if anyone else has the oem cable or the aftermarket.. I also have the brake bypass on both units.. the same one for each.. Maybe this helps.. but that is the only difference between my two units that i have noticed..

thanks guys

I have had my 8400bh for a little over a month now and had this issue twice. The problem I am having with it now is while my iPod is connected, it's giving me a "STOP" message on the screen. No album info, artwork, nothing. Can't control my iPod from the HU, I have to do everything straight from the iPod. Anybody else ever have this problem? I'm wondering if it has something to do with the HU itself or if it has to do with the iPod adapter cable? It has been like this for a few days now. Also, if I change from iPod, to say..Radio, I can still hear what the iPod is playing and I can also hear the radio. 

Hi,

I got the 8400 last summer, had the freezing issue right away, swapped 2x and all had the same issue. Called Pioneer and was told to send in, since I didn't wanna go without a radio all summer i declined. Stored car for winter, just took it out and after a couple of weeks freeze started, specially seems to happen when i open the top of my convertible. Funny thing also is that touchscreen was frozen but when i swapped to gps, touchscreen seemed to work.. Recently had the firmware upgraded via bluetooth, no change in touchscreen freeze.

I'm out of ideas, considering i paid good money for this unit, i find it dissapointing that Pioneer is not doing anything to resolve this common issue

I returned my third unit to Pioneer after the local repair center had it for two months last fall and a month this spring.  They replaced it with the 8500 and it has no issues so far.  It is critical to get in contact with them before your warranty expires.

When the outside temps are over 75F, mine would lock up.  Anything under that, fine.  I assume the direct sunlight and heat affect some of the units.  It is a great unit, when it works.

The local shop done the update and it did not work, they would put a hair dryer on it to get it to fail.  

Try talking to Nicole Johnson at Pioneer, she took care of me.

Just noticed the green "dial" button when calling someone from the phonebook doesn't work after firmware update the 8400 is buggy at best and i really appreciate your provided information.

I returned my third unit to Pioneer after the local repair center had it for two months last fall and a month this spring.  They replaced it with the 8500 and it has no issues so far.  It is critical to get in contact with them before your warranty expires.

 

When the outside temps are over 75F, mine would lock up.  Anything under that, fine.  I assume the direct sunlight and heat affect some of the units.  It is a great unit, when it works.

 

The local shop done the update and it did not work, they would put a hair dryer on it to get it to fail.  

 

Try talking to Nicole Johnson at Pioneer, she took care of me.

Just noticed the green "dial" button when calling someone from the phonebook doesn't work after firmware update the 8400 is buggy at best and i really appreciate your provided information.

Works fine for me. The 8400 is an amazing unit, you just got stuck with a dud.

Read from the beginning, looks like we all having dudd units..this is my 3rd with same issue..or should i say issues

Works fine for me. The 8400 is an amazing unit, you just got stuck with a dud.

Read from the beginning, looks like we all having dudd units..this is my 3rd with same issue..or should i say issues

Seems so. Glad I got lucky.

I returned my third unit to Pioneer after the local repair center had it for two months last fall and a month this spring.  They replaced it with the 8500 and it has no issues so far.  It is critical to get in contact with them before your warranty expires.

 

When the outside temps are over 75F, mine would lock up.  Anything under that, fine.  I assume the direct sunlight and heat affect some of the units.  It is a great unit, when it works.

 

The local shop done the update and it did not work, they would put a hair dryer on it to get it to fail.  

 

Try talking to Nicole Johnson at Pioneer, she took care of me.

I just found this forum while searching for the same issue. Mine works as long as the outside temp is below 80 but anything higher causes the touch screen to stop working like the others. I bought my AVH-P8400BH in April 2013 and had it about a month and it worked great until the summer heat hit. Crutchfield is still making suggestions to me such as making sure the screws that hold the unit to the DIN adaptor aren't shorting out the board on the inside of the HU. After reading this, I'm inclined to get a refund since I'm still within Crutchfield's 60 day return policy.

My setup:

Not using W/R port for Steering wheel controls.

I have the phone MIC, antenna, CD-IU201S cable and USB cable plugged into the back of HU.

64 gig USB thumbdrive attached to USB cable normally plugged into the CD-IU201S cable. I do not have an Ipod or Iphone plugged in to the CD-IU201S cable.