Roy Peterson's Recent Activity

Roy Peterson attached a file to the thread Parasitic battery drain?.

Toyota did release a TSB for some 2023-2024 vehicles. TSB 0054-24 12V Auxiliary Battery Charge May Deplete When PHEV Charging Cable has...

Roy Peterson replied to the thread Dealership oil Change.

Toyota sends the survey. Note on dealer invoice states if unable to rate service visit EXCELLENT please call our customer relations to...

Roy Peterson replied to the thread Dealership oil Change.

Best research indicates engine oil expansion is about 6% from room temperature to 210 F. With the 4.4 qts in the Prius engine, the...

Roy Peterson replied to the thread Dealership oil Change.

Slightly below COLD results in close to the top dot on the dip stick when checking the oil when HOT. I check the oil in my vehicles with...

Roy Peterson replied to the thread AGM battery for Gen 4/Gen 5 Prius/Prius Prime and observations on the 12-V charging system.

A little update on how the BMS functions with temperature. For past 2.5 months, temps here in eastern WA have been cold Below 40’s....

Roy Peterson replied to the thread Dealership oil Change.

I worked in the aviation world for 50+ years and was taught to follow manufacturer requirements and I still think this way. The Car Care...

Roy Peterson replied to the thread Dealership oil Change.

Thank you for this info. I’ll visit dealer this week to let them know about this error. Cheers

Roy Peterson liked Hammersmith's post in the thread Dealership oil Change.

The tech mistakenly used the info for a regular Prius, not a Prime. Probably didn't realize there was a difference. The Prime needs...

Roy Peterson posted a new thread.

Dealership oil Change

The 12 month / 10,000 mile service was due on my 2024 Prius Prime. The car has @8400 miles and I have done 2 oil changes myself. I did...

Forum: Gen 5 Prius Main Forum

Roy Peterson replied to the thread AGM battery for Gen 4/Gen 5 Prius/Prius Prime and observations on the 12-V charging system.

Regarding the OEM battery, after I had a dead experience in August, I made appointment to have the dealer investigate. They tested the...

Roy Peterson replied to the thread AGM battery for Gen 4/Gen 5 Prius/Prius Prime and observations on the 12-V charging system.

With my AGM, I did a full charge with my Noco Genius 5 a few weeks ago. The weather has been in the 30’s and 40’s up until today. For...