Air Suspension Problems - Any input?

[Evopro54]

Hi All,

Need some input on this one - don't trust my dealer. 2020 Ram 1500 Limited w/ 33k miles.

6 months ago I noticed my air compressor running frequently. Shortly after that, I noticed a high-pressure relief "hiss" or "blow off" from the rear of the truck, similar to what you'd hear from a commercial truck with air brakes. It would "blow off" in approximately 15-minute intervals with no real pattern.

I let it go for about two months before a terrible whining sound started from the front end. I took it to my dealership which told me the suspension ECU had gone bad, running the pump constantly, which burnt out the pulley for the compressor. On top of that - they had to replace the alternator because it was in the same pulley line as the compressor.

Everything was covered under warranty, thankfully. Two days later - I get a "Please wait, suspension system cooling down" notification (never got this with the original issue) and the same "blow off" sound.

I am super worried that this system is going to fail again and I will be outside of the 36k miles that the warranty allows.

I brought it back to the dealership and they claim "nothing is wrong, no codes" and stated that the "blow off" sound is NORMAL. Mind you, I did not hear this sound once in the first two years of driving this truck.

Any opinions, or advice would be much appreciated.

Thank you,
AJ

 

[Scap]

I'm quite certain the air suspension compressor is not engine driven.

I think compressor is being used interchangeably in regards to two completely separate systems in the truck. HVAC and Air Ride.

 

[Evopro54]

Thanks for the reply, Scap.

I was using 'compressor' solely with regards to the air ride system and I assumed the dealer was too.

With that being said - that makes the alternator replacement seem fishy? If its not belt-driven.

 

[JoeRam]

The Air Suspension System has an electric compressor located under the truck, I believe passenger side mid way, enclosed in a housing.
If your dealership replaced any thing under the hood belt driven, it was not Air Suspension related and provided a smoke screen as BS

 

[Evopro54]

Thanks for the info guys - they are 100% ********ting me.

I just received a copy of the service report from my last visit. The belt starter generator (BSG) assembly and tensioner pulley were replaced.

SEPARATELY - air suspension compressor assembly was replaced. I have no idea why they would try to hide this.

Again, still concerned that the compressor is going to fail again on my dollar.

THANKS AGAIN FOR THE INSIGHT!