Tesla Model S Onboard Charger – Gen 3 (1052532-00-D)
Fits later Tesla Model S vehicles equipped with the third-generation onboard charger. Common part numbers include 1052532-00-D (48A module) and region-specific variants. Always confirm the part number and revision on your original unit or in the Tesla EPC before ordering.
The onboard charger (OBC) converts AC power from your wall connector or public EVSE into high-voltage DC for the main traction battery. This listing is for an OEM Gen 3 Tesla Model S onboard charger, part number 1052532-00-D (or equivalent Gen 3 revision), used in later Model S vehicles with the updated sealed charger architecture.
Units are sourced from donor vehicles, cleaned, visually inspected, and function-checked before shipment. Ideal as a direct replacement when your existing Gen 3 charger has failed and is logging AC charging faults, limiting charge current, or refusing to start a charge session.
Why these fail
- Thermal cycling and high load – Repeated high-current AC charging warms internal components, stressing power electronics and solder joints over time.
- Moisture or coolant intrusion – Compromised seals, coolant leaks, or condensation can lead to corrosion, tracking, and internal shorts.
- Line transients – Poor grid quality, voltage spikes, or miswired EVSEs can damage input stages and EMI filtering.
- Component aging – Electrolytic capacitors and other wear-out parts eventually drift out of spec and trigger charger fault codes.
- Secondary system issues – Operating with intermittent faults can put extra stress on the charge port, HV harness, and HV junction box if not corrected early.
Our solution
- Genuine Tesla hardware – OEM Gen 3 charger module, part family 1052532-00-D (or compatible revision), not an aftermarket substitute.
- Cleaned and inspected – Housing, mounting ears, HV/low-voltage connectors, and coolant ports are checked before shipment.
- Known-good replacement – Intended as a like-for-like swap for failed Gen 3 onboard chargers in later Model S vehicles.
- Backed by Gruber – Sold by a shop that specializes in Tesla and EV power electronics, with technical support available.
- Ideal for service centers – A solid option for independent EV shops and fleet operators needing a tested spare on the shelf.
| Tesla Part Number |
Onboard Charger – Gen 3 (sealed, 48A) 1052532-00-D (other suffix revisions may apply) |
| Vehicle application |
Later Tesla Model S vehicles originally equipped with the Gen 3 onboard charger and matching HV harness/charge port configuration |
| Function |
Converts AC input from Level 1/Level 2 EVSE into high-voltage DC for the traction battery |
| Charger generation |
Third-generation sealed onboard charger used in later Model S charger systems |
| Approximate output |
Up to ~11.5 kW AC charging capability at 240 V (up to 48 A), vehicle-configuration dependent |
| Regional variants |
Some markets use alternate Gen 3 part numbers and/or 3-phase variants; verify your existing charger’s label for exact match before ordering |
| Condition |
Pre-owned OEM unit, cleaned and inspected; normal cosmetic wear from prior service is expected |
| Warranty |
Limited 90-day replacement warranty from ship date (contact us if your application requires different terms) |
Service & coverage
Installation of high-voltage components should only be performed by technicians trained on EV safety and Tesla procedures. Gen 1 / Gen 2 → Gen 3 conversions typically require additional harness and HV junction box changes; this module is intended as a direct replacement for vehicles already equipped with the Gen 3 charger. If you are unsure about generation, build date, or compatibility, contact us with your VIN and existing part number before ordering so we can help verify fitment.
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Maintenance tip:
If the car Supercharges normally but limits AC charge current, repeatedly stops mid-session, or throws “Charging error” messages on Level 2, the onboard charger or its HV harness may be at fault. Address these symptoms early to prevent damage to connectors, contactors, and the charge port.
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Need help confirming this is the right Gen 3 charger?
Contact Gruber for pre-sales technical support and charger stack compatibility questions:
623-433-8500 or use the contact form on our website with your VIN and a photo of your existing charger label.
