The rear diff gears still turn whether AWD is engaged or not.
This differential is different from the old differentials you are accustomed to. They work like automatic transmissions. Do you know the difference between a four wheel drive and an all wheel drive?Guys, This is my 4th new Honda (one of them I drove 350,000 miles), my 4th AWD/4WD car, I have driven over 1 million miles without hitting anyone else, I have built several homes and did every part of them (I only knew 1 other person who could do that), have overhauled many engines and am known as “the person who can fix just about anything” but have never needed to change differential fluid, and needing to that does not make sense to me. I know very well the difference between a differential and a transmission. One of my best friends is a certified Honda mechanic. And every other brand too (including Porsche, Mercedes and BMW..I have seen his certificates). I wrote to Honda America, and they told me that they don’t answer technical questions and to ask my "idiot" dealer. I am here to learn what Honda may not have told us. This brings up 2 questions….does anyone know if the rear differential is always “active”? Something tells me it is not….When I bought my HR-V,, the dealer only gave me 2 books…a 150 page owners manual and a much smaller customer information book. It sounds like each dealer is different?
I don't think its a free service - unless you bought some sort of maintenance plan from the dealer before hand or something like that. I should not be too expensive as there is very little fluid, only 2 small crush washers to replace, and once up on a lift- its probably under an hour of labor. I hav no idea what " the dealerships' are charging.I have a 2018 HR-V AWD with 22,500 miles. Recently took it to the dealership to have them check the right rear suspension and they mentioned that it needed a differential service at 15K miles which they have no record of doing. Would that service have been billable or would it have been covered at the time? If it is billable, how much does it usually cost?
Yes. Thanks. I had a brain fart. I was thinking of looking at the insides of the head with the valve cover off.I think you meant valve cover..
The general consensus is its all a computer algorithm Honda programs in - based probably on engien temps and run time maybe RPMs etc and of course mileage (prob mostly mileage).Does the service indicator system have sensors that detect when fluids need to be changed, or does it go from mileage and nothing more? Is it a diagnostic or merely a reminder? I am wondering why there's no service code lit telling me to change differential fluid, yet no mention of differential fluid on my 15K service invoice from a year or so ago.
Could also be an environmental effect - they can boast about creating less toxic wastes.From what I've read from other sources, the car manufacturers are trying to extend the intervals between all fluids to be as long as possible so as to make the car APPEAR to be more economical in maintenance expenses. They do not car about the unnecessary wear and tear on the engine and drive train. It's all about perception. It's like the so-called "lifetime" fluids in some vehicles. There is no such thing.
It's your car. Do what you think is best for it. I prefer to pay a little more in extra services to make my vehicles last as long as possible.
However, if you're the type to trade every few years, it doesn't matter. But in the end, somebody will be stuck with the bill for repairs.