Recent content by hokiematt

The contactors within the battery pack assembly have their own 12V feed, separate from the BMS power. There should be a 15A fuse in one of the underhood fuse boxes (fuzzy memory thinks it's driver's side) labeled CONTACTOR - it's probably worth making sure that fuse is good. After the fuse...

The reported isolation resistance value is low; normally before the contactors close, it should be over 3000 kOhms. Once contactors are closed, usually the system shows around 2000 kOhms. It will be unhappy below 1000 kOhms. Since you've already been inside the battery junction box, one...

It's a bit confusing since you've posted across four different threads, but (correct me if I'm wrong) your problem is you can't charge and also recently while driving your RAV4 stopped (presumably shifted to N/lost READY mode). Your measurements show that the input fuses to the charger are...

You were sold a lemon, or more accurately a ticking time bomb. I would suggest contacting the auction site if this problem was not disclosed in the vehicle details.

It sounds like your 12V battery is fine. My suggestion is to purchase a diagnostic cable from @asavage and install the Tesla Powertrain software on a laptop. The good news here is that your problem is repeatable, so it should (hopefully) be easy to diagnose. While charging, you can watch the...

Yes, they are different: BMS_f073: 'HV battery detected unexpected HV bus behavior' I'm assuming the button to clear the BMS_w023 warning was designed for easy ability to clear that code after contactor replacement. I do not know how the system determines whether to set either of these codes...

I couldn't find the Tesla spec, but the Toyota standard for HV motor insulation is >100 Mohms between any HV conductor and ground/chassis/motor case. It might be overkill, but bagging a part and pulling a decent vacuum (>29" Hg) will lower the boiling point of water to room temperature. This...

What's the nature of the drive unit failure? Noisy, intermittent faults, or won't move at all? I don't need any more projects, but could be interested if the price was right. Feel free to PM.

The service manual says the cutoff is 14 mph for the pedestrian alert. But as Fred notes: if you're hearing a loud noise at 40 mph, it's likely your drive motor on its final legs. It could also be a bad wheel bearing or a half shaft. Inspecting the speed sensor on the motor for coolant...

The previous version of TPD (1.1.42) had a button specifically to clear fault BMS_w023: 'HV battery detected possible damage to contactors'. The newest version (1.1.46) of TPD appears to have dropped that particular functionality. I would suggest disconnecting the 12V battery for a few minutes...

I'm not familiar with this setup, but I doubt it includes support for the extended charge option. However, after 10+ years your battery pack probably has little to no extended capacity remaining, so you're likely not giving up much.

I used two Gigavac GV200PA-1 contactors for my replacements 5 years ago, no issues since then. Plenty of stock available: https://octopart.com/search?q=gv200pa-1&currency=USD&specs=0 The best price may be at EV West: https://www.evwest.com/catalog/product_info.php?products_id=407 If you use a...

With new paint, newer tires, and lower mileage, your asking price seems on the low side; I would start at $14k and come down if needed, unless you're just in a hurry for a quick sale. You probably won't find a buyer on this forum, as we all likely already own one.

TPD will provide a better diagnosis than any of us speculating. While waiting for the TPD interface cable to arrive, remove and inspect the motor speed sensor at the end of the motor on the passenger side: a damp sensor is indicative of a leaking rotor seal, which may mean damaged inverter...

For new (and old) TPD users: unlike typical automotive ECUs, the Tesla RAV4 gateway only seems to know about what's happening "right now" - if you cycle ignition power, my experience has been that any record of faults (unless still currently active) will go away. If you are having an...