Try page 576 of the manual.
Download the manual if you don't have it.
I would ask whoever comes out to jump if they know how to
work on these . I would assume it would be the same as a Prius.

 

How To Jump Start a Hybrid Toyota Car or Crossover

Learn how to jump start a hybrid Toyota car or crossover with this step-by-step guide and how-to videos created by Downeast Toyota.

www.downeasttoyota.com

 

Thanks. I actually found that article earlier today, lol. Can the "second vehicle" also be a hybrid?

 

I left my brand new 2020 XSE hybrid in the garage for 10 days and now it's dead. This is upstate NY and it wasnt that cold so thats a separate issue.

Anyway, my wife has a '19 hybrid XLE. Can I use hers to jumpstart? I know where to hook up the terminals on my car (thats dead) but the manual doesnt say where to hook up if you were jumping another car. Is it the same spot? Not even sure I can jumpstart one hybrid with another. Service department is closed today of course. I can always call Triple A if needed

Any advice? Thanks!

Do not under any circumstances allow some tow truck gorilla to jump a hybrid. Yes, you could jump one of them to the other, being sure that the "live" car is turned off the whole time. You can also just go to a parts house and pick up one of those little jump packs to use.

 

So to be clear, if I'm using my wife's hybrid to jumpstart mine, DONT turn hers on? The manual says run the donor car for 5 minutes, but again the manual doesnt say anything one way or another about if the second car is a hybrid.

Also, there's nothing in the manual about whether I hook up to the donor hybrid car's 12volt under the hood or the battery in the trunk.

I was considering buying one of those jump packs. It'll be useful to have. If I cant find a clear answer I'll probably just go this route.

 

To add: If the car is really "brand new", then it was probably delivered to you with a discharged 12v battery. Happens more often than you would hope, dealers are pretty stupid. Having been fully discharged one or more times, be aware that you might continue having issues with that battery.

 

The manual assumes you'll be jump starting from a traditional car. There's no information on there about how to use a hybrid to jump another car, not that I can find.

I've seen some claims online that you shouldn't, and I can see the logic. With a traditional car you should have the other car started so you're using both its battery and the power from the alternator to start the other car. But a Toyota hybrid doesn't even have an alternator -- one of the electric motors serves that role along with complex electronics, so I'm not sure you can get anything more than what the battery provides. And then you have the battery itself, which is relatively undersized to begin with.

In my opinion, your best bet is to connect to the battery in the trunk when jumping another car. You probably don't get benefit from turning on the car, where has the risk of is blowing a fuse. Alternatively, disconnect the battery from the jumping car.

IIRC, the manual also talks about holding the start button to get it started in emergency situations. You might try that instead of jumping.

 

I have a battery jump pack in every vehicle we own. While I've never used one to jump one of our cars I have helped a number of stranded motorists. I've also used the battery packs to charge our cell phones and to operate our Garmin. Costco has them on sale for 59 dollars most of the time.
Bill

 

The Toyota hybrids vehicles use the large traction battery to charge and “power” the 12v via a DC to DC converter. So in READY mode the hybrid 12v should be giving stable full power that could be used to jump another vehicle. But I would not use our Prius Prime, or Prius v (wagon) to jump another vehicle because if anything goes wrong you can damage a lot of expensive parts. Just hocking up jumper cables (with no fuse built in) the wrong way would blow the smallish hybrid battery and DC/DC converter (or is it inverter) at a minimum. What happens when the other vehicle’s alternate starts feeding both connected 12v batteries? I just say something like “Sure I’ll jump your car. My hybrid has a huge battery that can move the whole car. It puts out over 300v. I’ll jump your car into the next state.” and they look elsewhere for a jump.

You don’t need a big/powerful jump pack for a hybrid. It has a smallish 12v because it does not start the Internal Combustion Engine (ICE) but rather starts vehicle computers, charges brake booster, and powers a relay that connects the large traction battery to the Hybrid system. Then the traction battery can power a generator/motor to start the ICE.

 

Advance Auto Parts - Down for Maintenance

Something like this should do the trick?

 

If it’s a brand new car you have free Toyota Roadside Assistance. Call them and let their contracted service guy take care of it. Assuming they know what they’re doing, watch and learn.

 

I'd just put a battery charger overnight on it. If any of my vehicles sit for more than a couple weeks I put a 2A charger on them overnight. I spend weeks at a time away for work.

 

Thanks everyone for the help. Ive been at work today, sorry for any slow responses

 

Ctek battery tenders are highly regarded BMW just relabels them now .
Seems like they would use the traction battery to keep the 12 volt battery
charged up to a point.
Tesla's had a 12 volt battery for the electronics and if it goes dead you can't
start the car so does the Pacifica Hybrid produces the same I can't start the
car issue.
I wonder if the new model rav4 hybrids have the same jump charge point inside the fuse box the earlier models do.
Are there even any access points to the High Voltage Traction battery ?
The 12 Volt system should be isolated from the High Voltage Traction Battery
in some way.

 

The jump point is in the fuse box. And, as you said about electric cars, the 12V isn't really used for starting the engine. Jumping another car with a hybrid might be questionable, but I think it should be fine to jump another hybrid or EV.

 

The key issue here is that any Hybrid which is in ready mode will raise battery voltage to about 14.8 volts immediately so any other device which is connected in parallel will experience this voltage and the corresponding high current which could result. If the equipment you use cannot support this voltage or current it may be damaged or at least could blow a fuse if one is incorporated. The safest method is therefore to interconnect the batteries, or the device used for jump starting, but do not put either vehicle in ready mode. After five minutes enough charge should have been transferred to the flat battery to achieve ready mode AFTER disconnecting jump leads, and as soon as this has been done the battery will continue to recover from its own traction battery power. It could be argued that switching an identical donor vehicle to ready mode should be safe but the current that would continuously flow into the flat battery would risk sparks (or flames!) if the leads or connections were anything less than perfect. I stress this is just my opinion as an ex automotive engineer and electrician I don't have any specific knowledge of the RAV4 beyond owning one and reading the manual.

 

I remember reading in my Prius manual that a hybrid should never be used to jump start another car.

I assume the methods described here by making sure the donor car is not in ready would work as now its just the 12 volt battery and not the donor cars traction battery involved in the jump start. I still would be worried about any backflow of voltage to the donor car, perhaps unnecessarily.

I have a Anti Gravity jump pack I use when one of my hybrids has a 12 volt failure. As soon as I connect the leads the dash lights up as normal. I have read post where people have hobbled together 8 D sized batteries to get the car to go into ready mode.

As far as a battery charger, I believe a special charger is needed for an AGM battery.

 

Hello,
Which antigravitybatteries jump starter do you have? I was thinking about getting the xp3, mainly because it is the lightest unit by weight. I was planning to get their 42” extension cable to hardwire it directly to the 12v battery in the trunk. I will of course only connect the xp3 to these extension cable when doing a jumpstart, and immediatelly remove the xp3 afterward. I find this solution the most elegant and easy to use. But not sure if it will work.

 

Worst case and you take the battery out of the car and take it somewhere to be recharged. Yes AGM batteries have special recharge rates and voltages. If you remove the battery, what do you lose on a Rav4h? Anything beyond some personalized settings you can restore? I know on my Prius v it was a trivial swap.

 

Most of the better charger tenders these day's will do agm batteries and regular batteries.

 

The 2020 rav4h manual clearly states that you should not jump start another vehicle with your hybrid from the fuse box Jump start terminal. Page 670.
Still waiting for my LE in Canada. 2 months so far. dealer says it should be delivered in on3 more month.

 

I had to jump my other vehicle, a non-hybrid Kia Rondo, with my wife's 2019 RAV4 Hybrid a couple times and it worked just fine with both cars. I just used the positive terminal in the fuse box and a bolt for the negative with the cables and it started my other car no problem. The RAV4 hybrid was fine afterward.

 

WOW, you really like to live dangerously. Considering the cost of the potential damage from what you are doing, go get yourself a proper jump pack to keep handy. Also re-read your owner's manual where it tells you not to do this.