[Rick_414]

I thought the R4H and R4P are CVTs and the rear axles are the electric motors, so no gears/traditional differential as with the ICE variants...do they mean changing the fluid in the motor?

Separately, dealers are getting slimey around me too... jjust the other day, I brought my R4 in for the 15k service and they were also pushing an alignment, which I refused...I'm not even sure they did the rest of the inspections...the main thing at 15k was the oil change, and it didn't look like they even did that as the dipstick handle still had dust on it, and the oil at the tip looked darker than I would have expected for fresh oil...though it was a little higher than before.

YES, there is a rear differential and it does need service. The rear differential should have the fluid replaced at 60,000 miles, especially if you carry heavy loads or tow a trailer. Uses Toyota Genuine ATF WS fluid. Same as the ECVT transmission.

 

[Rick_414]

I recently posted a similar post, and my costs included yours plus replace transaxle fluid. There’s no transaxle in a hybrid, plus brake fluid replacement etc. I declined all these extras, which finally brought the 30k mile check down to basic oil and filter, rotate tires, changle out cabin and engine air filters. So I did my own. With all the added ”suggested” maintenance, my bill would have been over 1,700. The Toyota maintenance schedule is what I follow. I bought a brake fluid moisture tester from amazon for 13 dollars. Checked my vehicles and bikes, and an old can that had been sitting unsealed but closed for about 2 years. The old can was still within limits, but the vehicles and bikes all indicated zero moisture. I suppose it depends on where you live, but use your best judgement on all this. At least you didn’t get the transaxle fluid change! Plus I had already told my representative that mine was a hybrid. And had him email me the list of items and costs. Buyer beware!

There IS a rear differential that should have the fluid inspected at 30,000 miles and replaced at 60,000 miles.
It takes Toyota Genuine ATF WS fluid, the same fluid as the ECTV transmission.