Open Vehicle Monitoring System for Home Assistant (Marketplace integration)

Installs: 143 sharing analytics
GitHub stars: 33
Connection: Works locally
Upkeep: Updated in the last 6 months
Version: v1.9.1, October 25, 2026
Category: Vehicles and transport, Cars and EVs
Kind: Marketplace integration
Needs: Needs the Marketplace (HACS on 2026.10 and older)
Domain: ovms
Source: github.com/enoch85/ovms-home-assistant
Issues: Report an issue

Independent directory, made by the developer of Vulpo. Not affiliated with Home Assistant or the Open Home Foundation.

Screenshots From the README of enoch85/ovms-home-assistant.

About

Open Vehicle Monitoring System connects an OVMS V3 vehicle module to Home Assistant over MQTT. It discovers the metrics the module publishes and creates entities from them, including sensors, binary sensors, a vehicle location tracker and switches for climate control, charge control and valet mode. Where a metric has no built-in definition, the integration asks the module which unit it uses instead of guessing from the topic name. Actions allow sending commands to the module, setting module features and controlling climate and charging, with rate limiting on commands. Options cover the MQTT topic structure, secure connections with certificate verification, a stored PIN for locking and valet mode, a topic blacklist, and hiding sensors that stop updating. It works locally and is set up in the UI.

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Supports

Works locally Talks to your devices on your own network. No vendor cloud in between.
From the Marketplace Installed through the Marketplace, formerly HACS.
Actively maintained Its author released or pushed a change in the last six months.

Provides

Locks
Switches
Presence

Setting it up

Install it from the Marketplace and restart Home Assistant, then add it under Settings, Devices and services.

Open Vehicle Monitoring System HA

Broker Host
Connection Port
Username
Password
QoS Level
Verify SSL/TLS CertificateSSL/TLS certificate verification only applies to secure ports (8883, 8084)

MQTT Topic Structure

Topic Prefix (default: ovms)
Topic Structure
MQTT Username in Topic

Custom Topic Structure

Custom Topic Structure

Topic Discovery

Retry discovery

Vehicle Configuration

Vehicle ID

After setup

QoS Level
Topic Prefix
Topic Structure
Connection Port
Verify SSL/TLS CertificateSSL/TLS certificate verification only applies to secure ports (8883, 8084). Stored PIN support (for lock/unlock and valet/unvalet) requires verified TLS.
Topic BlacklistA comma-separated list of topic patterns to filter out. This prevents unwanted entities from being created. Any topic containing these patterns will be ignored. Use this to filter high-frequency log topics that create too many entities.
Stored PIN
PIN CodeStore your OVMS device PIN here so you don't have to enter it every time you lock or unlock. The same stored PIN is also automatically used by the valet/unvalet switch. Without a stored PIN, Home Assistant will prompt for one when locking/unlocking; the valet switch will fall back to a neutral placeholder, which is enough for vehicles that don't validate the PIN (e.g. Fiat 500e). Only available on verified secure MQTT connections.
Entity Staleness ManagementAutomatically hide inactive sensors after a period without updates to reduce UI clutter and improve performance
Delete HistoryDelete history when hiding stale sensors (unchecked = hide only, preserves history)

Texts from the code of enoch85/ovms-home-assistant.

Entities

Binary sensorsCharging Status, Door Lock Status, Connection Status, Front Left Door, Front Right Door, Rear Left Door, Rear Right Door, Trunk, Hood, Module Status
PresenceVehicle Location
SensorsBattery State of Charge, Estimated Range, Battery Power, Battery Current, Battery Voltage, Battery Temperature, Charging Time, Charging Power, Odometer, Cabin Temperature, Ambient Temperature, Trip Meter, and 2 more
SwitchesClimate Control, Charge Control, Valet Mode

Actions

Send commandSend a command to the OVMS module.Fields: Vehicle ID, Command, Parameters, Command ID, Timeout
Set featureSet an OVMS module feature.Fields: Vehicle ID, Feature, Value
Control climateControl the vehicle's climate system.Fields: Vehicle ID, Temperature, HVAC Mode, Duration
Control chargingControl the vehicle's charging system.Fields: Vehicle ID, Action, Mode, Limit

Troubleshooting

DiagnosticsDownloads a diagnostics file to attach to a bug report.

From the README

The Open Vehicle Monitoring System (OVMS) integration for Home Assistant. Connect your electric vehicle with Home Assistant via MQTT, automatically creating sensors for all vehicle metrics.
Automatic Discovery: Detects all metrics published by your OVMS module without manual configuration
Entity Creation: Creates appropriate Home Assistant entities based on data type with intelligent state parsing
Units from the Module: MQTT carries bare values, so for metrics this integration has no definition for it asks the module (metrics list -n) which unit each metric is in, instead of guessing from the…
Smart Categorization: Organizes entities into logical groups (battery, climate, location, etc.)
Real-time Updates: Entities update as new data is published through MQTT
Complete Entity Set: Shortly after setting a vehicle up, and after a Home Assistant restart where previously discovered entities are still unavailable, the integration asks the module for a full…
Command Interface: Send commands to your vehicle through services with proper rate limiting
Vehicle Status: Track online/offline status of your vehicle automatically
Secure Communication: Supports TLS/SSL connections to MQTT brokers with certificate verification
Vehicle-Specific Metrics: Special support for VW e-UP!, Smart ForTwo (453/EQ), Smart ED (451), Nissan Leaf, Renault Twizy, and MG ZS-EV - with additional vehicle models planned
Diagnostics Support: Provides detailed diagnostics for troubleshooting

From the README of enoch85/ovms-home-assistant, MIT License. Shortened.