Donno, but I had my rear pads replaced on my TCH WAY ahead of the front ones too.

 

Have you had car since new sound like fronts done back not. Then backs need it. 70% of braking is in front for decades I do fronts then front and back. If backs wore faster you have a dragging caliper

 

I assume you have EPB (Electronic parking brake)and it engages and disengages with the shifter. The EPB utilizes the same rear pads unlike older models that use a separate crescent brake shoes for parking brakes.

The EPB, during the 1.5 second of retraction/release, gets help from the hydrolic brakes which grabs the rotors to let the EPB motor move away to prevent it from getting damaged in sudden acceleration.

So, when releasing the the EPB button (with your finger or electronically through the shifter) give yourself 2 seconds before you let go the brakes and hit the gas, because the hydraulic brake is still holding rear rotors to let the electric motor to retract away.

That's one explanation why the rear pads of the Camry Hybrid with electronic parking brake are consumed as fast as the front ones.

One more thing to add that your vehicle is equipped with electronic stability control and ABS brakes. When you gentle break, the front brakes will utilize the regenerative braking, while the rear axle is using the old style pads breaking. So the computer sends the signal based on the number of rotations and the speed and spread the orders evenly, whether or not it's a pad breaking or a regen. breaking.

 

Nope. Regenerative braking is not done by brakes at all. It is done via PSD, utilizing resistance, created by MG, when it works as generator. Basically, electro magnetic cohesion. TCH is designed to utilize up to 80% of braking power that way and after, normal hydraulics kick in and work just like regular brakes, FRONT OR REAR.
Nice try though, fancy theory.

 

I agree with you about the regenerative braking.

What I was trying to say (not a theory), that in all Camry Hybrids up to 2024 we don't have rear axle electric motor (like Rav4 hybrid AWD). So, the front axle has 2 ways (Regen. & Pads) to slow/stop the vehicle while the rear axle got pads only, let alone the extra role the rear pads play for the EPB.

Try having your EPB engaged in Auto mode and pull your shifter to D and let go the brakes and press the accelerator, while the EPB is still whining/retracting you'll feel the car still engaged for a second despite the EPB is already released/retracting. That's because the rear pads are still pressed hydraulicly for a second (according to Car Care Nut) to let the EPB motor move away from action. So, if you hit the gas during that, the rear pads are faced with rolling rotors while they're firmly pressed to secure/protect the EPB tiny motor. We don't have that thing in cars with pedal/ handle parking brake.

One more thing to add, recent Toyota hybrids are equipped with smart anti role back braking (smart means no need for the driver to take action compared to older Toyota hybrids) and that's one more job the rear pads share.

I may be overcomplicating things instead of thinking that simply Toyota equipped the rear axle with thinner pads! Probably.

BTW, as of today my 2021 TCH has 319600 on the clock with factory pads. I did lubed the sliding pins twice since I bought it new. Yes, the rear pads are going faster than the front, in contrary with all the vehicles I own(ed) equipped with rear pads.

Sorry for making it too long.

 

ECM does not differentiate between the front and rear for "regen braking". If you ever drove EV, those are, basically, single pedal cars, as regen slows down vehicle just like hydraulics, without any hydraulics involvement.
As I said, braking is designed to produce up to 80% of slowing down via regen braking, that done by EM cohesion IN PSD. Only if more braking power is required, THEN hydraulics are engaged. Not front brakes with regen and rear brakes with hydraulics.
Also, braking force is controlled by VSC module hydraulic braking is distributed to each wheel per demand, based on ABS sensors output. TCH can slow down front to end or side to side, to maintain vehicle stability.
Just leave regen out of this. Rear pads are significantly smaller, comparing to the front ones. Maybe, different compound. Maybe, OP and I had bad pads batch. Happens. But regen has none to do with it.

 

42k 2022 camry se Hybrid
Rear brakes are worn down to 80% and fronts are fine ?

How often do you use adaptive cruise control?

 

42k 2022 camry se Hybrid
Rear brakes are worn down to 80% and fronts are fine ?

If you meant what you said, your rear pads are 20% worn after 42k with 80% life remaining, meaning you'll likely see 200k before replacement is required. Not an issue. If you meant that the pads are worn down to 20% (around 2mm thickness), then yes, that's a problem and something is wrong. Shops often bullshit customers about pad thickness. Ask for the actual measurements in millimeters and confirm for yourself before authorizing replacement. A set of plastic thickness gauges are cheap from Amazon and go a long way towards pumping out the bullshit.