Sealing
3 article(s) on «Sealing». Sorted by severity — most severe first.
Model S 85 kWh and pre-facelift X: stuck air valves and moisture ingress into the battery
Old Model S 85-kWh packs (and same-design 90-kWh packs in pre-facelift S/X) are prone to corrosion/leaks through valves/fuse cover → BMS errors, HV shutdown. What to look for and how to fix it.
Tesla Model S/X 100 kWh Plaid/Palladium: features and vulnerabilities
The ~100 kWh Palladium pack on Tesla Model S/X Plaid and Long Range (2021+ refresh): 7920 Panasonic 18650 cells, more reliable voltage sensing, but the floor is vulnerable to impacts and moisture.
Model S/X refresh (2021+): battery sealing issues (officially acknowledged by Tesla)
Tesla has officially acknowledged a battery sealing issue: bulletin SB-25-16-002 'Replace Flood Port Plungers' (05.05.2025) — free goodwill replacement of 5 flood ports on S/X built 01.2021–22.09.2022 (US and Europe). Caveat: the bulletin covers external flooding; there are still no confirmed 'breathing' moisture-ingress cases on Palladium packs.