Cannot change 2012 m37X climate control

[JjTheHusky]

Hello, recently a 2012 Infiniti m37x was handed down to me from my mother, as she received a work car.

What I did was enter the 'secret' diagnostic menu on the control unit, and "Initialize setting" which told me that it would reset the unit, erasing phone book, Bluetooth settings and stuff like that.

That did work but the first problem I had was the reverse camera wouldn't activate. I easily fixed this by entering the diagnostic menu and selecting the correct camera setup for this vehicle.

However soon I found out that I could not change any of the climate settings. None of the buttons for climate did anything and the settings for the climate on the control unit were greyed out; shown in this picture.


I went back into the diagnostic menu to see if there are any settings for it but I could not find any, however, I saw in the error history that there was an unfinished configuration error from my first initialization.


I tried asking in other places but no luck, I'm not sure if the dealership will help but it may cost some $$ anyways.

Any advice? First time digging into this stuff.

[JCesar]

dual temp activates wants to change the temp for the pass side. click the hot or cold arrow on that side. upper vents try setting the air to the front top not floor

[JjTheHusky]

dual temp activates wants to change the temp for the pass side. click the hot or cold arrow on that side. upper vents try setting the air to the front top not floor

None of the controls are responsive.

I looked around and it seems that I would need to reprogram the unit with "Nissan consult III" which I don't have, so I may need to visit the dealership and waste abunch of $$$ for "labor"

[satown210]

Yup there have been threads before about people getting in there and bricking the system. You basically deleted the software for the climate control. Sometimes it can be re-programmed other times it has to be replaced. Shouldn't be in there messing with diagnostic menus.

Side note: How in the world can you breath with all that air freshner?! Just one of those is overpowering and you gave two or more?!

[fuzzysig]

well hate to bring this back from dead but i just did this as well.
first of. Why the fAk would you delete one of the main functions in a car without backup by default. This is absolutely degenerate design from nissan

why would you put a "reset feature" that detes the most essential function.

Its like clicking reset on windows and it deletes bios instead and bricks your entire pc..

[fuzzysig]

so i bought vcx se with consult 226.50
went to reprogram HVAC but there is no options to reprogram
anyone know how to use consult 3+ can help out?

[VStar650CL]

See HAC-89 here:
https://www.nicoclub.com/service-manual ... %2FHAC.pdf

Most of the older HVAC's aren't programmable, only configurable (if anything). The FSM says your M needs the unit configured, but since it doesn't list any config options, the config will just be a part number called a "ROM ID". That's VIN-specific, the dealer Parts Dept can look it up for you. Provided your C3+ has the information, go into Reprogramming/Configuration and select Configuration -> After ECU Replacement -> Manual. Select the correct ID from the list and hit Next. Things get stickier if your C3+ doesn't have the native info. In that instance, you need to fool it by saving a blank config using "Before ECU Replacement", pulling up the saved text file with Notepad, replacing the number on the last line of the file with the correct ID, then writing that using the automatic restore function. I forget the file chain where the saved configs are stored, but I have it written down at work and can get it for you if needed.

[fuzzysig]

do i need to buy the subscription to do any of that or can this be fixed in offline mode?
the "reprogramming" button is greyed out. do i have to download something for this?

since i erased everything does that mean i need to program the "blank ecu" or use the vehicle configuration buttons for what you described?
im just trying to avoid going to dealer. they seem to be trying to avoid doing it alltogether. i feel like they will do their " diagnostics" and tell me that they cant do anything about it and i need a new unit and end up spending way more money than i have to

[VStar650CL]

Like I said, HVAC's from that time period aren't usually reprogrammable. You should have buttons for "Before" and "After" replacing ECU at the bottom of the reprogramming screen, those are for reading and restoring configs. If those are grayed out then your C3+ doesn't have the capability you need.

[fuzzysig]

no i have those buttons. i dont have the reprogram button which im assuming requires me to purchase the nissan subscription?

for example the av button gives me options to select few settings like type of microphone etc.
HVAC doesnt. which im assuming is because i basically removed all programming from it.
i just want to make sure that when i do this i have everything needed so i dont have to purchase the subscription twice because i also need to upgrade the transmission software

[fuzzysig]

and also i saw someone on 350z forums mentioned that they bought a used unit and had the dealership reprogram it.
the used unit would have the configuration file that i need correct?
so with that said would i be able to pull that file from another car and then manually modify the file to use on mine?
or is that same as doing the procedure you mentioned above in your first reply, saving the blank file from my car and modifying it?

[VStar650CL]

and also i saw someone on 350z forums mentioned that they bought a used unit and had the dealership reprogram it.
the used unit would have the configuration file that i need correct?
so with that said would i be able to pull that file from another car and then manually modify the file to use on mine?
or is that same as doing the procedure you mentioned above in your first reply, saving the blank file from my car and modifying it?

Yes, BUT, that's provided the used unit came from a car with the same config. Cross-matching the ROM ID's using the donor and recipient VIN's is the only way to know that. The whole point of configs is to match the functions of the unit to the equipment in a particular vehicle.

[fuzzysig]

so do i need the subscription to reload the hvac?

is it the hvac that i need to reinstall the configuration on or is it different module?
because the guy on nissan forums bought the actual dvd unit which he said holds the programming for hvac.
do you know if its same for m37x?

[VStar650CL]

Only the display functions are in the AV Unit, the HVAC has its own program. However, you're not listening to me. Your HVAC (A/C Auto Amp in Nissan lingo) is not reprogrammable. Most of them prior to '17 aren't. All yours has is a configuration, and the configuration consists of a part number called a ROM ID. If you get the ROM ID from the dealer parts department, you have all the information you need to use the "After ECU Replacement" function.

[fuzzysig]

i understand what you are saying.
my local dealership is a bit difficult to deal with which is the reason i bought the j box in the first place because the were giving me a runaround trying to trap me in an endless "fix"

but i will try to get the rom id on monday

while im at it.
would it be easier to buy a newer unit from a Q70 with updated bluetooth module?
the whole reason for this disaster was because my BT was acting up so i thought that would reset it ( which it did, now it works better but its still old and slow)
since everything seems same in the last year model of q70. can i just buy the module from that car? since that module has the programming not deleted it would be possible then to configure that module to my car and not have to deal with the dealership at all

[VStar650CL]

You'll have to check the part number from the Q against your existing p/n. AV's and HVAC Amps are rarely mix-and-match, no different from any other electronic controller. You're taking your whole electrical system's life in your hands when you plug in a p/n that doesn't match. I recently mentioned in another thread, I once had to replace three controllers on a B17 Sentra and rewire the entire cabin side of the CANbus after a mismatched-but-lookalike BCM smoked it. The only reason it didn't go to the junkyard is because I told our sales department that if they took it on trade, I could fix it for a lot less than the $8K we had to quote. So try stuff like that at your own risk, bad things can definitely happen.

[fuzzysig]

finally got a round toit

i just saved "before ecu configuration" and climate control started working
didnt do anything else

didnt even click "after ecu replacement"

didnt have to modify the file or anything.
i think the car was just being a lil beach because i said i wanted to sell it

[VStar650CL]

finally got a round toit

i just saved "before ecu configuration" and climate control started working
didnt do anything else

didnt even click "after ecu replacement"

didnt have to modify the file or anything.

Software, aargh. I'm sure some grody programmer in Calsonic's basement knows why it did that, but he's probably the only one on earth.

think the car was just being a lil beach because i said i wanted to sell it

[fuzzysig]

but hopefully for everyone else.
the ebay vcx j-box with nissan license confirmed to work for this problem and its much cheaper than going to dealership
maybe put sticky on this thread and add some tags to it

[ravinjcls]

So I also did the same thing and my climate system is stuck on AUTO. Can someone confirm what unit I can replace to try to get this working again or do I absolutely need to go to the dealer? This is annoying. Self caused, but annoying.