Replaced big battery just goes to neutral

First thing the trouble shooting experts will want to know are the fault code numbers.

Good luck.

 

Do you have the traction battery disconnect turned back to the locked position?

 

Pressed firmly? It takes some force.

Tom

 

Assuming that you removed the orange traction battery interlock switch while removing and replacing battery modules: when you reinstall the switch you need to rotate the handle 90 degrees, then slide it to lock in place. The sliding part of the process is often forgotten.

If that is good, then you'll need to retrieve the current DTC to obtain a clue about what else is wrong with your car.

 

DTC - diagnostic trouble code

I suggest that you have your car towed to another Toyota dealer so that the DTC can be read and a diagnosis provided to you.

 

This does sound like a problem with the orange service plug, specifically with the handle not being slid downward, after it completes the 90 degree pivot during plug insertion.

If not that, then there is a wiring problem inside the battery case.

 

Not to be overly critical, but the OP's comments raise several red flags. His lack of familiarity with common terms such as "hybrid battery" and "DTC" suggest he shouldn't be mucking about inside of the hybrid battery module.

Tom

 

This does sound like a problem with hv service plug or its fuse.If someone forgets to install the service plug properly then remembers to reinstall the service plug while the prius is in ready mode will cause the the service plugs fuse to blow.There is aproximately 100 amp fuse within the removeable hv battery service plug (orange colored high voltage safety interlock).This fuse cannot handle the surge current to charge capacitors in the inverter with the system turned on and someone inserting the service plug.Normal prius operation energizes a (capacitor) precharge relay in the hv battery pack first then about one second later the main hv relay (within the high voltage battery assembly) is energized eliminating surge current and NOT blowing the service plug fuse.The service plug should be installed with the prius ignition/ready mode turned off.

 

big battery? dont now about DTC... and you replaced the "big battery"
lets call it the hybrid of tractions battery and not the "big battery"
there are so many connectors you have to take of to takeout and replaces a cell.. check and double check them all
and readup a liitle before you do anything like this.......
really dont think you are for real... not reading about the hyrbid battery but replacing cells anyway is not a smart thing or just a fake post.

 

Put the wrenches down before you kill yourself, seriously.

 

Although I have not seen the traction battery, my impression is that it was quite heavy, several connectors to fuss with and not something for your shade tree mechanic to do on a Sunday afternoon. But I could be wrong. ;-)

 

Hybrid Components

It is visible if you remove the rear cargo floor and then the black tray underneath it.

 

I was able to carry my old HV battery from the back of my Prius to my work bench in the shed (about 25 meters) with little difficulty. It is not that heavy, and two people can handle it comfortably. I am 68 years old, but in good physical shape.

The only reason for a "shade tree mechanic" to avoid working on these batteries is the high voltage risk involved. You have to know what you are doing and be careful.

JeffD

 

Did you remember to connect the hv ecu. The hv ecu is within the hv battery case. If the hv ecu is not connected the can buss will not be terminated with termination resistor. resulting is loss of communication with hv ecu and other ecu's on the computer buss.. If hv ecu is listening to data on the computer buss (functioning prius) You would hear two Relay clicks when turning on the car (ready mode).

 

What is the condition of the 12 VOLT Battery????:cheer2::cheer2:

 

I forgot to put the orange disconnect switch back in and my 2006 did the same thing, nuetral only.