Pack dropped and opened in garage. Water confirmed in pyro fuse cavity. Modules 12 & 14 TBMM PASS (3–4 mV). Module 16 FAIL at 146 mV true imbalance (cells 3.681–3.827 V). Mixed results so far — some connector issues, at least one real cell-group problem.
| VIN | 5YJSA1H25FF091116 |
| Miles / Cycles | 117,988 mi / 1,215 cycles |
| Pack | 1058038-00-F (85 kWh, 16-module) |
| Supercharging | SC01 free (confirmed) |
| Acquisition | Copart Akron non-runner |
| Metric | Value | Notes |
|---|---|---|
| Pack voltage | 361 V | |
| Cell max / min | 3.968–3.970 / 3.622–3.624 V | Static |
| Imbalance | 344–348 mV | No change over 5 days |
| CAC min / max | 208 / 211 Ah | 2.70 Ah spread (~90% of nominal) |
| Temps | 61.7–68.9 °F | Uniform |
Green = flat (<10 mV) • Orange = elevated • Red = high priority
| Mod | Low V | High V | Spread | Flag |
|---|
| Module | SMT Spread | TBMM mV | Result | Interpretation |
|---|---|---|---|---|
| 12 | 81 | 4 | PASS | Connector issue, not cells |
| 14 | 2 | 3–4 | PASS | Healthy — matches low SMT |
| 16 | 150 | 146 | FAIL | Real imbalance confirmed |
| 7 | 346 | PENDING | — | Highest priority |
| 6 | 186 | PENDING | — | High priority |
| 9 | 190 | PENDING | — | High priority |
| 10 | 150 | PENDING | — | Medium |
| 11 | 150 | PENDING | — | Medium |
| 1–5,8,13,15 | 1–3 | PENDING | — | Expected PASS |
Confirmation of visual/physical inspection for sensor leads and the BMS circuit board on each module. Update as modules are opened or inspected.
| Module | Sensor Leads Inspected | Sensor Leads Issues | BMS Board Inspected | BMS Board Issues |
|---|---|---|---|---|
| 12 | PENDING | — | PENDING | — |
| 14 | PENDING | — | PENDING | — |
| 16 | PENDING | — | PENDING | — |
| 7 | PENDING | — | PENDING | — |
| 6 | PENDING | — | PENDING | — |
| 9 | PENDING | — | PENDING | — |
| 10 | PENDING | — | PENDING | — |
| 11 | PENDING | — | PENDING | — |
| 1–5, 8, 13, 15 | PENDING | — | PENDING | — |
Cell group imbalance ≤ 6 mV = PASS. High ≤ 4.20 V, low ≥ 3.00 V.
Peak at acquisition: 22 codes. After Toolbox (June 20): cleared to 4 remaining.
| Code | Status | Notes |
|---|---|---|
| BMS_f107 | Re-latches | Hard block on drive/charge — cell voltage sensor inaccurate |
| BMS_w107 | Persists | Warning version of f107 |
| BMS_u018 | Persists | SOC imbalance limiting |
| BMS_a129 | Persists | BMB VSH connector — water entry confirmed |
| BMS_u008, others | Cleared | 18 codes cleared via Toolbox + 12V / door / CAN redeploy |
Primary: Pyro fuse cover (1020227-00-C) gasket failure → water entry. Confirmed water + corrosion in cavity.
Pyro fuse identified: ASY,FUSE,HVBAT,HI DURA,83 • TPN 1053124-00-A • TSN T15E0022094.
Contributing: deep discharge, 12V failure, charge port door swap without relearn, BMB connector corrosion.
Other sites on 5udyk.com tied to this 85D pack repair and Tesla work.
DIY diagnostic tool project guide. Portable CAN reader for classic Model S/X packs — brick voltages, temps, and imbalance without a laptop.
tpm.5udyk.comNotes for dropping the pack on this 2015 Model S 85D in the driveway using floor jacks instead of a lift.
battery.5udyk.comOut of Spec battery-failure video mapped onto this car’s Scan My Tesla snapshot so failure modes can be checked in order.
teslapack.5udyk.comResearch dossier on this specific 2015 85D (VIN 5YJSA1H25FF091116) — features, Supercharging, recalls, and risks from the Copart listing.
85d.5udyk.comSearch notes for a 2013–2017 Model S with dual motor, rear-facing jump seats, and transferable free Supercharging.
tesla.5udyk.com