Jump starting another car battery with the hybrid 4Runner

[sanitylost]

Have been reading the 6th gen Hybrid TRD pro manual and learned the engine fuse box under the hood has a positive terminal that can be used to jump start the battery. Got me wondering if the fuse box also had a negative terminal contact point? If you wanted to jump start another car with the Hybrid TRD Pro, would you need to use the battery in the back and directly hit both +/- terminals from there?

Sponsored

 

[127.0.0.1]

you don't jump start anything using a hybrid**

https://www.4runner6g.com/forum/threads/jump-starting-from-a-hybrid.3864/

that thread doesn't discuss this issue. hybrid 12v are different.

the hybrid 12v battery is not designed take the amp load. a hybrid 12v
is solely for starting the ECU and computers and not for pushing a starter
motor and flywheel -[EDIT- they do have a starter, my bad.] itself can be jumped so your computers will start, but tapping it to fire another vehicles deep amp load can create problem$

have a hybrid ? start carrying an independent jump pack
if you want to rescue others, or yourself

**the 4runner trims that are hybrid and have an alternator might be able to do it

EDIT: hybrids do have a starter for rare circumstances to assist starting, so
the 12v does have amps to start, but it's charged by the traction battery and
not an alternator so it's not recommend to use the 12v to jump another starter

 

[John2112]

Have been reading the 6th gen Hybrid TRD pro manual and learned the engine fuse box under the hood has a positive terminal that can be used to jump start the battery. Got me wondering if the fuse box also had a negative terminal contact point? If you wanted to jump start another car with the Hybrid TRD Pro, would you need to use the battery in the back and directly hit both +/- terminals from there?

I would suggest you carry one of those small lithium jump packs. They work great even in cold weather, The battery in the hybrids aren't meant for starting the vehicle, only powering the accessories and computer. And in the event you ever run your battery down just attach that and everything will come back to life. Since the hybrid doesn't have a starter in it they can put smaller batteries in the vehicle.

 

[mars001]

you don't jump start anything using a hybrid**

https://www.4runner6g.com/forum/threads/jump-starting-from-a-hybrid.3864/

that thread doesn't discuss this issue. hybrid 12v are different.

the hybrid 12v battery is not designed take the amp load. a hybrid 12v
is solely for starting the ECU and computers and not for pushing a starter
motor and flywheel. itself can be jumped so your computers will start, but
tapping it to fire another vehicles deep amp load can create problem$

have a hybrid ? start carrying an independent jump pack
if you want to rescue others, or yourself

**the 4runner trims that are hybrid and have an alternator might be able to do it

Which hybrid has or didn't have an alternator?

 

[Dead Horse]

Which hybrid has or didn't have an alternator?

As far as I know, it's only the hybrids with the auxiliary switches. They're standard equipment on the Trailhunters and Pros, and optional on the OR trim. I have the aux switches on my hybrid ORP, and I have an alternator.

 

[John2112]

Which hybrid has or didn't have an alternator?

The Trailhunter like I have and the TRD Pro do have alternators, they assume you're going to put accessories like winches on them. The Trailhunter and pro lso has a 2400 w inverter for AC power and to run whatever high wattage appliance you want to take ,You could definitely plug an AC powered battery jumper into one of those outlets and jump start just about anything. For helping other people I just carry one of those lithium battery packs. I chose the hybrid for those 2400 w power outlets, and for its off-road prowess. It definitely does a better job than my previous Jeep with the exception of Jeeps all-wheel drive system on the Wrangler.

 

[mars001]

Thank you. Then can a hybrid be jumped from a jump starter if the battery was dead?

 

[John2112]

Thank you. Then can a hybrid be jumped from a jump starter if the battery was dead?

Yes, you can jump the 12-volt battery on the hybrid. That 12 volt battery on the hybrid is not used for anything other than the computers, it does not start the engine directly. The hybrids do not have a starter.

 

[mars001]

Thanks. Can the hybrid battery run down then it couldn't start/run the engine?

 

[shine]

Yes, you can jump the 12-volt battery on the hybrid. That 12 volt battery on the hybrid is not used for anything other than the computers, it does not start the engine directly. The hybrids do not have a starter.

Hybrid 4Runners with the 4 AUX switches, including the Trailhunter and the TRD Pro, do indeed have a starter and an alternator. The 12v battery is larger than typically used with hybrid cars, page 609 in the owners manual has the specs for the battery.

 

[John2112]

Hybrid 4Runners with the 4 AUX switches, including the Trailhunter and the TRD Pro, do indeed have a starter and an alternator. The 12v battery is larger than typically used with hybrid cars, page 609 in the owners manual has the specs for the battery.

You're wrong, they have a 12-volt battery, they have an alternator but they do not have a starter. I own a Trailhunter, it has no starter. The electric motor starts the vehicle. That's how hybrids work.

 

[Nodak]

I would suggest you carry one of those small lithium jump packs. They work great even in cold weather, The battery in the hybrids aren't meant for starting the vehicle, only powering the accessories and computer. And in the event you ever run your battery down just attach that and everything will come back to life. Since the hybrid doesn't have a starter in it they can put smaller batteries in the vehicle.

as stated above, yes make dam sure you get a lithium battery pack. lithium is rated for extreme cold temps vs standard batteries.

i use them for my outdoor weather station and our garage door power lock. standard batteries barely last a year in the -20F temps we get.

 

[shine]

You're wrong, they have a 12-volt battery, they have an alternator but they do not have a starter. I own a Trailhunter, it has no starter. The electric motor starts the vehicle. That's how hybrids work.

...and if you ever need to replace your starter, here's the replacement part: https://autoparts.toyota.com/products/product/starter-assy-28100f0100

You might have to wait a while for the starter to to be used, here's how Toyota describes it in their documentation:

Title: T24A-FTS (ENGINE CONTROL): SFI SYSTEM (for 1Motor-HEV Model): Starter System; 2025 - 2026 MY 4Runner HV [12/2024 - ]

Normally, the ECM engages the K0 clutch built into the hybrid module assembly and starts the engine by increasing the engine speed with the motor generator.

When the ambient temperature is -15°C (5°F) or lower or after 10 months or more from the previous starter drive execution, the initial engine start with an engine coolant temperature of 70°C (158°F) or higher is performed with the starter.

 

[127.0.0.1]

wow learned something ...a hybrid with flywheel starter

it won't be used normally unless 10 months go by without it being used
(like engaging 4wd once in a while so it doesn't get stuck unused)
it will be used at -15 or lower

that also means though not recommended, it's 12v has good amps to
push a motor flywheel and might be usable to jump something else,
but note that the traction battery is what charges the 12v not an alternator, and putting
unexpected high amp draw on the 12v could damage up the hybrid system

 

[brumey]

Great info but asking for a summary:

1) Do some 4G's have an Alternator if they have the up--fitter switches?
2) Do all 4G Hybrids have a Starter, only used in certain situations?
3) Still probably best to avoid traditional car-to-car jumping and use an independent battery pack?

Sponsored