Heating system is useless

[IslandFalconer]

Well it cant. Thats why my comment about the valve was serious.

In a building hvac system, during the summer, the chiller runs cooling the air to a set temp, say 65f. Then for various offices, there are reheat units that reheat the air to say the 72f that is being called for from the stat. Those reheats are typically electric resistance heat but could be hot water.

I don't know how this gren system is designed. But, if its similar to a building system, the reheat on a car would be a coil the cold air would flow over, and that coil would need a valve controlling it. if that valve wasn't in the AC system, but instead on the motor, it could stick open and dump engine temp water at full flow, 200f, every time the system is activated. I do notice the rear vents suffer from low airflow, so it wouldn't take much for a heating coil to overwhelm the cool air and make it 160-180f.

Just a thought.

Vehicle HVAC systems are not like household or commercial systems. There are no coils, there are no nifty reheat systems. There’s a heater core and an evaporator. They use a blend door to deflect air over one or the other, the door sends air over the heater core or the evaporator. More likely the issue here is the stepper motors for the blend door.

 

[HereinDaRockies]

Calder stopped responding? Need to ask her what the company intends to do about the weak hvac

 

[Zimm]

I do have aN interesting tidbit…it appears that MY2026 will have a completely different HVAC system that will have heat sensors front and back in the ducts (something that apparently is absent on the current implementation) and will have front / rear temperature control.

If this is 100% confirmed (most likely since the source is very reliable) than this is proof positive for me that the current HVAC system has a serious design flaw that they’re unable to fix

Nobody in their right mind is going to change the production assembly lines at a cost of millions if there was a simple fix.

Maybe I’m seeing ghosts

It ought to backward compatible. It’s gotta fit in the same space.

 

[bails66]

Just chiming in to say have read this and other threads on this issue. An early adopter here who has seen just about all of the symptoms I have read. Last time at the dealer they did all of the bleeding stuff, and I've still had issues. The time before that they replaced the whole HVAC unit. I pushed the dealer pretty hard on their illogical explanations as to how I should operate the air conditioning. One example... they told me you have to turn A/C off when trying to get heat out of the system in Auto mode. Sure, except the moment you press the Auto button the A/C is turned on by the system. I asked them where in the owner's manual it says you should turn the A/C back off after the system turns it on in Auto mode. Of course they had no answer. In the end I felt like the head mechanic wanted to tell me what he knew but just held back. My thoughts are that the silence from INEOS on this indicates multiple faults in the design of the Climate Control and your car may have none, some or all of these faults. Best thing all of us can do is make sure your dealer is escalating the issues you are experiencing to INEOS and follow up to get their response.

 

[gkhaldi]

Update on the issue:

The dealer is still working with Ineos lvl 3 support and have been testing tons of stuff, replacing more stuff and seem to getting nowhere. We have now arrived at the point where the dealer is trying to work out a deal to replace mine with a MY2026 or replace it by a G-class (don't see the point in that but it's what they carry). They seem to have very little support from from Ineos Sales & Marketing to come up with a solution.

Looks like it's gonna end up costing me a bundle. So disappointed If anyone has any ideas who to contact at Ineos to get some movement please let me know. Thanks