BMW I3 Fast Charging LIM Module
The BMW LIM module is a CCS, CHAdeMO and AC charging controller. It is used to communicate between the vehicle and the public charging infrastructure, to allow fast charging to occur.
As these can be found affordably on eBay and from auto wreckers, they have been pursued as an open-source charger project.
CAN logs and other data
https://github.com/damienmaguire/BMW-i3-CCS
Power Limits
The limits for pre 2017/26 are 0V-500V 0A-250A, post 2017/27 0V-1000V -500A-+500A.
Connectors and Pinouts
| Label | Description | Compatible Plugs |
|---|---|---|
| 4B | 12 Pin Connector | BMW 61138373632
Audi 4E0 972 713 TE 1534152-1 / 1534151-1 |
| 3B | 8 Pin Connector (CHAdeMO models only) | BMW 61138364624
Audi 4F0 972 708 TE 1-1534229-1 |
| 1B | 16 Pin Connector | Hirschmann 805-587-545 |
| 2B | 6 Pin Connector | BMW 61138383300
Audi 7M0 973 119 TE 1-967616-1 |
| X | Replacement Pins | 5-962885-1 |
| X | Rubber Seal | 1-967067-1 |
| Pin # | Function | Description |
|---|---|---|
| 1B-1 | LED_S | Lighting Charge Socket |
| 1B-2 | ZV_LKL+ | Charge Door Lock Motor |
| 1B-3 | LED_M | Lighting Charge Socket |
| 1B-4 | ZV_LADE+ | Hood Lock |
| 1B-5 | ZV_LADE- | Hood Lock |
| 1B-6 | CAN | |
| 1B-7 | CAN | |
| 1B-8 | Wake up signal | |
| 1B-9 | Power | |
| 1B-10 | Ground | |
| 1B-11 | ||
| 1B-12 | ||
| 1B-13 | SENS_LKL | Charge Door Lock Sensor |
| 1B-14 | ZV_LKL- | Charge Door Lock Sensor |
| 1B-15 | CHARGE_E | Goes to KLE. Guessing this is charge enabled signal for the in car charger? |
| 1B-16 | ZV_LADE | Hood Lock |
| Pin # | Function | Description |
|---|---|---|
| 2B-1 | Pilot | |
| 2B-2 | Proxy | |
| 2B-3 | Diag? Looped back to Pin 4? | |
| 2B-4 | ||
| 2B-5 | GND | Ground. (Charge Socket) |
| 2B-6 |
3B Pinout:
- N/A
| Pin # | Function | Description |
|---|---|---|
| 4B-1 | HV+_SZ+ | Contactor Control |
| 4B-2 | HV-_SZ+ | Contactor Control |
| 4B-3 | HV+_SZ- | Contactor Control |
| 4B-4 | HV-_SZ- | Contactor Control |
| 4B-5 | U_HV_DC | |
| 4B-6 | LED_RT | Charge Status Light |
| 4B-7 | LED_GN | Charge Status Light |
| 4B-8 | LED_BL | Charge Status Light |
| 4B-9 | BR_GND | Charge Status Light |
| 4B-10 | ZV_LS- | Charge Socket Locking |
| 4B-11 | ZV_LS+ | Charge Socket Locking |
| 4B-12 | SENS_LS | Charge Socket Locking |
Observations
VIN Numbers is not required for AC or DC fast charging to function
Functional LEMs have come from vehicles where the Air Bags have deployed, indicating that the module still works after a "Safety" event has occured