There are 7 stored owner reports matching the electrical system leading-label group for the 2024 Ineos Grenadier in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 7 of 7 matching reports.
Open the full vehicle complaint log (all categories)There appears to be some electrical malfunction that causes the air conditioning to produce exceptionally hot air. It can only end when the air conditioning system is turned all the way off. This is a known problem in the owners groups that many people are experiencing. One of my friends just measured the temperature at 192° blowing out during air conditioning setting. I am having something similar And this must be fixed as it is dangerous
The contact owns a 2024 Ineos Grenadier. The contact stated that while driving at an undisclosed speed, the A/C was activated; however, there was extremely hot air blowing out of the vents. No warning lights were illuminated. The contact stated that the vents were extremely hot and that the air temperature from the rear vents was recorded at 175 degrees. In addition, the air temperature from the front vents was recorded at 132 degrees. The contact burned his right hand while recording the temperature from the vents. The vehicle was taken to the dealer, where it was diagnosed with an A/C system failure. The contact was informed that the A/C system needed to be replaced. The vehicle was being repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 11,000.
AC Electrical System - Vehicle will only blow full Hot air, regardless of the temperature control setting. This has happened many times since ownership (Dec 2023) with many visits to dealership without resolution.
The HVAC controller failure causes risk of burn to passengers. When operating the HVAC system on Air Conditioning, the system will direct heat from the engine bay without any temperature management resulting in hot engine air being sent through the HVAC system and out to the vents. In some circumstances the hot air is only sent through the rear vents and other times the system sends hot air to all vents with a high variability of when this occurs. In one experience, the hot air was only sent to the rear vents causing the rear vent’s metal knob to become very hot and resulted in my child burning their hand on the knob. The dealer has confirmed the issue on my vehicle and has ordered parts under warranty (currently on backorder for 30+ days) to resolve. The issue of the HVAC unit blowing hot air is common to many Ineos Grenadier vehicles according to the dealer and is also commonly raised on Grenadier vehicle forums. The immediate safety risk occurs when the heat is not apparent to the driver because the controller is only directing heat to the rear and the vent knob becomes a burn-point for passengers. This issue can occur regardless of the temperature setting on the driver controls whether being on auto or manual and the temperature setting of the HVAC set as cold air. My vehicle is available for inspection if requested.
I have a 2024 INEOS Grenadier with the factory installed Tow Package. While the Grenadier does not offer an Electric Brake Controller as an an option, they do market the vehicle as being pre-wired to accept aftermarket controller thereby allowing the vehicle to pull the maximum tow weight of 7600 pounds. The problem is the wiring does not conform to US requirements with regard to the brake signal trigger and as a result it is not possible to activate the brake controller. This is a known manufacturing defect affecting every Grenadier sold in the US. I have contacted INEOS regarding this matter and this is their reply: Hi [XXX] , Thanks for contacting INEOS Automotive. I have heard back from the relevant team and our team are aware of the issue. Unfortunately there was no ETA given for this but there are plans to look into this issue further. Please don't hesitate to contact us for any further assistance. Best regards, INEOS Automotive Customer Care Team This is not an acceptable response for addressing a manufacturing defect. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The body Control Module has been found faulty in numerous vehicles that affects the power windows, headlights, locks, Air condition, etc. Currently the manufacturer cannot reprogram new replacement module as they do not have a software capability.
1. When the fuel tank is filled up, it triggers an Engine Warning Light which has to be manually reset for other functions (like cruise control to operate). I've been waiting 4 months for a fix. 2. After numerous attempts, the dealership is unable to have the installed recommended break Controller (Redarc) successfully send a break signal to the towing wiring harness, meaning that I cannot tow vehicles safely in line with the vehicle's advertized specifications. I have left my vehicle with Mossy Inneos Houston and said I don't want it back until it can safely tow trailers as advertized.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Aug 30, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.