EV battery reconditioned back in 2023 and been great since then.
Few weeks ago i started seeing all the cluster's symbols just flash once while driving. Thought it was a glitch. Happened few times in the e last few weeks.
I have not changed the 12v battery since 2021 when i bought it.
One day went to drive it and would not get out of park. Both screens were black, which happens quiet often and all i have to do ia reset it by holding 2 buttons on the steering wheel.
Thought the 12v maybe is dying. Got a new one from tesla and installed it. Same results.
Left it for 2 weeks cane to ir and it was dead. This never happened with the old battery so it must be getting drained or not being charged by the main pack.
Placed a junper box and all lights come on and soor handles come out. Same measages: reduced power, system will shut down and low voltage detected. HV battery still charged at 92% and i doubt this is the reason for all this.
Did more reading and most say the dc to dc converter is not charging the 12v battery back and hence, similar to the alternator, and he ce would mot get out of gear. Its usually the 3 fuses inside the converter, but before i remove it to check it, they also say it could be the f100 fuse on top of the 12v battery which is a junction box. Is there a way you can see where the dc dc converter fuse if any so i can check if it is blown or not? All i see is the junction box abd then two other small fuses boxes next to the battery
Few weeks ago i started seeing all the cluster's symbols just flash once while driving. Thought it was a glitch. Happened few times in the e last few weeks.
I have not changed the 12v battery since 2021 when i bought it.
One day went to drive it and would not get out of park. Both screens were black, which happens quiet often and all i have to do ia reset it by holding 2 buttons on the steering wheel.
Thought the 12v maybe is dying. Got a new one from tesla and installed it. Same results.
Left it for 2 weeks cane to ir and it was dead. This never happened with the old battery so it must be getting drained or not being charged by the main pack.
Placed a junper box and all lights come on and soor handles come out. Same measages: reduced power, system will shut down and low voltage detected. HV battery still charged at 92% and i doubt this is the reason for all this.
Did more reading and most say the dc to dc converter is not charging the 12v battery back and hence, similar to the alternator, and he ce would mot get out of gear. Its usually the 3 fuses inside the converter, but before i remove it to check it, they also say it could be the f100 fuse on top of the 12v battery which is a junction box. Is there a way you can see where the dc dc converter fuse if any so i can check if it is blown or not? All i see is the junction box abd then two other small fuses boxes next to the battery
Jun 24, 2026 at 1:38 AM
