Tekonsha Primus IQ Proportional Brake Controller - Smooth, Plug & Play

Our review of the Tekonsha Primus IQ finds it a compact, dependable proportional brake controller best suited for drivers who tow light to medium trailers and want predictable, automatic braking without a complex setup. The unit's internal inertia sensor delivers smooth, proportional braking based on how the tow vehicle is stopped, and the digital LED keeps diagnostics and settings easy to read. With a snap-in dash clip and removable electrical connector the Primus IQ is designed to be installed, unplugged and stored with minimal fuss, making it a practical choice for owners who occasionally tow trailers with 1-3 axles.

Key Features

• Proportional braking: The internal inertia sensor applies trailer brakes in proportion to the vehicle's deceleration for smoother, more intuitive stops.
• Plug & Play installation: Snap-in dash mounting clip, plug port for adapters and a removable connector let the unit be installed or stowed quickly.
• LED display: A clear digital LED shows settings, real-time diagnostics and alerts so the driver can verify operation at a glance.
• Boost feature: Three boost levels provide extra stopping power when hauling heavier loads or when extra braking is needed.
• Self-leveling: The controller is self-leveling when mounted within a 90 degree vertical range, removing the need for frequent manual adjustment.

Who It's For

The Primus IQ is ideal for drivers who tow small to medium trailers and value an automatic, self-adjusting brake controller that reduces manual tuning. Its plug and play port and removable connector appeal to those who want easy installation and the option to stow the unit when not towing. The clear LED display and diagnostics are helpful for users who prefer visible confirmation of brake output and connection status.

This is not aimed at users who need an integrated factory-style controller hardwired into a vehicle for permanent installation, or for those who require electric-over-hydraulic systems; the Primus IQ is an electronic proportional controller and wiring harnesses are sold separately, so confirm vehicle compatibility before purchase.

Pros & Cons

Pros

• Reliable proportional braking gives a smooth, intuitive feel when stopping.
• Plug & play design and snap-in dash clip make installation and removal straightforward.
• Easy-to-read LED display with diagnostics helps confirm correct hookup and operation.
• Boost button provides extra stopping power for heavier loads when needed.

Cons

• Wiring harness is sold separately, so additional purchase and verification of vehicle adapters are required.
• Not a hardwired factory solution for users who want a permanently installed, concealed controller.

Specifications

Product	Primus IQ proportional electric brake controller
Braking type	Proportional (inertia sensor)
Axle compatibility	1-3 axles (2, 4, or 6)
Display	Digital LED display with diagnostics and alerts
Mounting	Snap-in dash clip, self-leveling within 90 degree vertical range
Additional feature	Boost with up to three levels of extra braking power
Wiring	Wiring harness sold separately; plug & play port for adapters

Our Verdict

The Tekonsha Primus IQ is a practical, well-balanced proportional brake controller for drivers who tow intermittently and want smooth, automatic braking with simple installation. Its LED diagnostics, boost feature and plug & play design make it good value for most trailer owners, provided you obtain the correct wiring harness for your vehicle.

Frequently Asked Questions

Do I need extra parts to install this unit?
Yes. The Primus IQ requires a vehicle-specific wiring harness or adapter which is sold separately to enable plug & play connection.

Will this work on my vehicle?
The controller is compatible with many Ford, GM, Chevy, Dodge, RAM, Toyota and Jeep models, but confirm the correct adapter and wiring harness for your specific model before purchase.

Can the unit be stored when not towing?
Yes. The snap-in dash clip and removable electrical connector let you unplug and stow the unit when you are not towing.