# FMC003 + MG ZS Hybrid+ (HEV): ABS/ESP startup errors & OBD factory alarm trigger

**URL:** <https://community.teltonika.lt/t/fmc003-mg-zs-hybrid-hev-abs-esp-startup-errors-obd-factory-alarm-trigger/21594>\
**Category:** Issue\
**Created:** [October 18, 2026, 6:39pm UTC](https://community.teltonika.lt/t/fmc003-mg-zs-hybrid-hev-abs-esp-startup-errors-obd-factory-alarm-trigger/21594 "2026-10-18T18:39:23Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![QuietReef79](https://community.teltonika.lt/letter_avatar_proxy/v4/letter/q/ecae2f/32.png) [@QuietReef79](https://community.teltonika.lt/u/QuietReef79)\
**Post date:** [October 18, 2026, 6:39pm UTC](https://community.teltonika.lt/t/fmc003-mg-zs-hybrid-hev-abs-esp-startup-errors-obd-factory-alarm-trigger/21594/1 "2026-10-18T18:39:23Z")

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Hello Teltonika Support Team and Community,

I am experiencing two critical CAN bus interference issues with an **FMC003** tracker installed in a **MG ZS Hybrid+ (HEV)**. Both issues completely disappear as soon as the FMC003 is unplugged from the OBD-II port.

### 1. Vehicle & Device Details:

- **Device:** Teltonika FMC003
- **Vehicle:** MG ZS Hybrid+ (HEV, SAIC Motor, VIN prefix: `LSJWS...`)
- **Ignition Source (Param ID 101):** `4` (Power Voltage only – the DC-DC converter maintains a steady 14.0V–14.1V when in READY mode)
- **OBD II Feature (Param ID 40000):** `1` (OBD Auto)
- **VIN Source (Param ID 40005):** `1` (Manually entered in Param ID `40003`)

### 2. Observed Issues:

1. **Temporary ABS / ESP / ADAS error cascade on ignition ON (READY mode):**  
Frequently, right after turning the ignition ON, the dashboard displays a cascade of temporary system faults (ABS, ESP, braking system). These errors clear shortly after driving off. It appears that FMC003 starts active OBD-II polling / protocol initialization immediately upon voltage rise, colliding with the vehicle’s internal ECUs during their startup self-test (POST).
2. **Factory car alarm (“Illegal Invasion”) triggered after ignition OFF and locking:**  
When turning off the engine and locking the car, if the FMC003 does not stop active CAN polling quickly enough (before the 12V battery surface voltage drops below the 14V) the vehicle’s BCM detects active OBD polling on a locked car as an unauthorized OBD intrusion. This triggers the factory alarm (horn and hazard lights) and sends an “Illegal invasion” alert to the MG iSMART mobile app.

Thank you in advance for your guidance!