You need to know where the Tesla Model 3 hides the 12-volt and the main pack. The 12-volt jump point matters when you are locked out in Phoenix heat, and the traction pack location matters for any tow. Here is where each one lives and how to reach it.
Where the Model 3 12-volt lives
The Model 3 12-volt is not under the hood. It lives under the front bumper cover, accessed through a small removable panel on the passenger side of the front bumper. The same panel hides the tow-hook mount and the jump posts.
To reach it for a jump:
- Pull the small panel on the front bumper’s passenger side. It pops out with firm pressure on the top edge.
- Behind the panel are the positive and negative jump posts, marked clearly.
- Connect the red clamp to the positive post. Connect the black clamp to bare, unpainted metal on the chassis, not the negative terminal. That keeps any spark away from the battery.
- Let the donor feed for two to three minutes, then try to power the car up.
This is the only practical jump point on a Model 3. Do not try to access the 12-volt directly through the frunk; it is mounted under the panel and is not designed for casual access.
For the full walk-through, see how to jump a Tesla from the bumper tow hook.
Where the Model 3 traction pack lives
The Model 3 traction pack is the long, flat battery that runs the length of the floor between the front and rear wheels. It is a structural part of the chassis, sitting under the passenger compartment. You do not access it for a jump or a charge. You access it only for service.
The traction pack is what you charge through the charge port on the rear driver-side taillight. The same port accepts both Tesla’s NACS connector and, on a Model 3 with an adapter, a CCS handle.
For the broader view on charging and range, see Tesla charge time in Phoenix heat and Tesla home charging on APS and SRP.
Why Phoenix heat shortens both
Heat is the killer for both batteries. Phoenix averages about 111 days a year at or above 100F. Independent research summarized by Battery University puts 12-volt service life at about 47 months in hot climates versus 59 in cool ones.
The traction pack is more resilient than the 12-volt but still ages faster in heat. Geotab found cars in climates above 27C for more than 35 percent of days degrade about 0.4 percent per year faster than those in mild climates. The traction pack loses some capacity over years in Phoenix. The 12-volt fails outright in two or three years.
For the broader view, see when Tesla 12-volt batteries fail in desert heat and Tesla battery life in Phoenix heat.
Why the jump point matters during a lockout
A dead 12-volt leaves the Model 3 locked with a dark dashboard. The flush door handles do not present, the fob does not respond, and the screens are dark. Without the mechanical key from the fob, you cannot even get in.
The jump point behind the bumper cover is the only practical way to wake a locked Model 3 without forcing the door handles. A mobile operator pulls the panel, jumps the posts, and the car wakes. The doors unlock once the 12-volt has enough charge to run the handle motors.
For the wider picture, see how a Tesla 12-volt rescue works and how to tell a Tesla 12-volt is dead in Phoenix.
What to do if your Model 3 12-volt is dead right now
Get the car as far off the travel lane as you can. Keep hazards on. Have a location ready.
Use the mechanical key from the fob to unlock the driver’s door. Pull the small panel on the front bumper’s passenger side to access the jump posts. Connect a jump pack or a donor battery. Let it feed for two to three minutes, then try to power the car up.
If the car still won’t wake after a clean jump, stop. A deeper electrical fault can mimic a dead 12-volt. Call a mobile operator or a flatbed.
Call (602) 932-0920 for a mobile operator to come to you. The operator quotes before any work starts and bills you directly.
Frequently asked questions
Where is the Tesla Model 3 12-volt battery?
Under the front bumper cover, on the passenger side. Access is through a small removable panel.
Where is the Tesla Model 3 traction pack?
Under the passenger compartment, between the front and rear wheels. It is a structural part of the chassis and is not accessed for a jump or a charge.
Can I jump a Model 3 12-volt from the bumper?
Yes. Pull the small panel on the front bumper’s passenger side to access the jump posts. Connect the red clamp to the positive post and the black clamp to bare metal on the chassis.
Does Charge Pro PHX work on Tesla Model 3?
Yes. We match you with an independent local operator who carries the right gear for a Model 3 12-volt jump. The operator quotes and bills you directly.