Welcome to the forum.

Not normal, in fact, I have an issue with excess heat at the driver's feet.

Standard warranty is 36,000 miles (60,000 km) or 36 months.

 

first thing to check.... is the engine getting up to normal temps. does the gauge on dash show in the middle of the band. does the coolant in the bottle look ok? clean?


if the eng is getting to normal temps then its a problem in the dash. most likely a blend door problem. but also could be a plugged up heater core. less likely but possible a bad temp sensor in the duct.


if the engine is not getting up to normal temps then a thermostat. another symptom of engine not getting up to normal temp is bad fuel economy.

 

having the heat set on max would probably mean it is not a sensor in the duct work but the other suggestions are all a possibility.


It may also mean that the car is low on coolant and the heater core is higher up in the system. check the collant in the overflow bottle but also in the radiator itself. Make sure the car is cold when you check the radiator. I'm not too familiar with the pathfinders (just joined the club a few weeks ago) but there may be a bleed valve for the cooling system to help get air out.

 

Thanks for the suggestions all. I have not had access to the car for a few days. These are some things I was also thinking about. My first thought was going to be a coolant system flush (she gets basic cheap oil changes only) and I doubt it was ever looked at or flushed.

Oddly enough though, while searching I stumbled upon a post where someone in a pathfinder had almost the exact same issue. They fixed it by just turning on the back seat heat. The air blowing out the front vents turned from luke warm/cold to hot. I had her try that and she said it's getting really warm now. Not sure why that would work, doesn't seem right. I suspect there is still some issue - possibly sensor or electrical related. Anyone heard of that before?

 

Hi there, is anyone still active on this thread. I have the exact same problem with my 2015 Plationum Pathfinder, and I've been to the dealer half a dozen times to be told, "its normal sir, they're all like that" as their response.

Turning on the rear vents does nothing, actually.. doing so actually shuts the rear ventilation almost off!! but again, "its normal sir, they're all like that" is the response i get.

Does anyone have a documented fix to this problem

Thanks

 

hi Jayhat, have you ever pursued the issue to find a fix to the problem?

thanks

 

They haven't been here since Jan 2017.

My take anytime poor heater performance occurs is to suspect low coolant level.

 

Verify that the door for the cabin air filter is installed correctly and doesn't leak any air. I was getting cold feet until this was fixed.

 

Thanks, but the problem seems much more complex.. I have mediocre heat during accelaration, and at idle my heat slowly drops to the point where its just warm. I've had two heater core flushes and i get good heat after that, but it only lasts one trip, then the heat disappears again. The dealer says they are all like that and no problem found.

If i didnt owe $35k on it, i would trade the **** thing in.. I'm beyond disappointed with it.

 

So people with crap rear heat, it looks like for rear heating in the 14 pathfinder at least, it uses a PTC Heater, so if you aren't getting heat, this is probably cactus.

For the front heating, it uses a heater core, so if you aren't getting good heat in the front, then probably a cactus heater core.

Look for the service manuals, search on here and you will find them, then look under the HA section, for HEATER & AIR CONDITIONING SYSTEM, will have troubleshooting and diagnostics for both these

 

So people with crap rear heat, it looks like for rear heating in the 14 pathfinder at least, it uses a PTC Heater, so if you aren't getting heat, this is probably cactus.

For the front heating, it uses a heater core, so if you aren't getting good heat in the front, then probably a cactus heater core.

Look for the service manuals, search on here and you will find them, then look under the HA section, for HEATER & AIR CONDITIONING SYSTEM, will have troubleshooting and diagnostics for both these

I don't know that to be true with the rear HVAC on any 2013+ Pathfinder. Diagrams I've seen show a rear heater core and evaporator core. I have seen reference to an electric (PTC) heater that's supposed to take up the slack when the coolant temp is cold.

Regardless, the HVAC system is pretty complex on the PF. There's 3 blower assemblies. One in the dash, one in the center console and one in the back.

 

also there are little motors that open and control the vents, if not the heater core or PTC element, then could be a motor is cactus and vent is closed

 

hi mercina, I will look for these manuals and attempt to diag. thanks

Please keep the comments coming folks, I have only time!! 6 more years on my loan to be exact! smh

 

Here is a link to some service manuals @Bushman provided in another thread

Pathfinder 10.1" Head Unit

Has anyone seen this incredibly large screen they made for the PF? I have not been interested in changing the head unit until I saw this thing. Anyone seen this in person by any chance, or maybe purchased it? Here is the link for aliexpress incase anyone is interested in purchasing it...

www.pathfindertalk.com

 

Thank You mercina, i will go through each one

 

How did you make contario?
My wife texted me this morning that her 13 pathfinder didn’t have any heat. Also mentioned it was stuck on the defrost fan.
so I haven’t looked at it yet but wanted to know how you made out?

 

Could very well be. I'll have to do some more poking around, although I think that pic you shared is the center console blower, not the one in the back.

I'm pretty sure I came across coolant and refrigerant lines running to the right rear corner of the vehicle when I've been underneath.

 

Could very well be. I'll have to do some more poking around, although I think that pic you shared is the center console blower, not the one in the back.

Here is exploded view of the back one, someone forgot to add a PTC to that one when it was design day, wouldn't have taken much to have run some underfloor or headroom ducting to get some heat back there from the front as i have seen other manufacturers do.

 

I've posted information about this on many other threads.
The rear (3rd row) ventilation system is AC only and refrigerant lines do run back there to an evaporator. There is no heat back there, all heat to the 3rd row is delivered through the floor vents located under the 2nd row seats.