Tekonsha 90160 Primus IQ Trailer Brake Controller Review – Smooth Proportional Trailer Braking
The Tekonsha 90160 Primus IQ is a proportional electric trailer brake controller designed to provide smooth, controlled braking for trailers with 1–3 axles. Its internal inertia sensor automatically adjusts trailer braking according to the tow vehicle's braking intensity, while the digital LED display, self-leveling design, boost settings, and manual override provide convenient control for everyday and heavier-duty towing.
Key Specifications
Brand: Tekonsha
Product Type: Proportional Electric Trailer Brake Controller
Part Number: 90160
Trailer Capacity: 1–3 Axles / Up to 6 Brakes
Brake Type: Electric
Display: Digital LED
Amperage: 30A
Leveling: Self-Leveling
Wiring Harness: Sold Separately
Main Features
Proportional Braking
The Primus IQ uses an internal inertia sensor to determine how strongly the tow vehicle is slowing and applies the trailer brakes proportionally. This helps produce smoother braking instead of having the trailer brake too aggressively or too weakly.
Three Boost Levels
The boost feature provides up to three additional levels of initial trailer braking power. This is useful when towing heavier loads or when the driver wants a more aggressive initial braking response.
Self-Leveling Design
The controller is self-leveling when installed within its specified vertical mounting range, reducing the need for repeated manual leveling adjustments. This makes installation and everyday use more convenient.
Digital Display & Diagnostics
The easy-to-read LED display provides braking information, settings, and diagnostic alerts. The controller can also monitor the trailer connection and identify certain electrical problems.
Performance
Performs exceptionally well for:
Travel and utility trailer towing
Trailers equipped with electric brakes
1–3 axle trailer setups
Heavier towing applications requiring adjustable braking
Controlled braking while reversing or maneuvering
Pros
Smooth proportional braking response
Supports trailers with up to 3 axles
Three boost levels for adjustable braking
Self-leveling installation
Easy-to-read digital LED display
Built-in diagnostic capabilities
Manual override for additional braking control
Compact design fits conveniently under the dashboard
Limited lifetime warranty from Tekonsha
Cons
Vehicle-specific wiring harness is sold separately
Designed for electric trailer brakes rather than standard hydraulic-only systems
Proper installation and adjustment are essential for safe towing
Compatibility should be verified for the specific tow vehicle
Who Should Buy This?
Ideal for:
Pickup and SUV owners who tow electric-brake trailers
RV and travel-trailer owners
Drivers towing 1–3 axle trailers who want proportional braking control
DIY installers looking for a compact, adjustable brake controller
Final Verdict
The Tekonsha 90160 Primus IQ is a well-equipped trailer brake controller for drivers who want smoother and more predictable braking. Its proportional inertia-based operation, self-leveling design, digital diagnostics, three boost settings, and support for up to three trailer axles make it a versatile choice for a wide range of towing situations.
One important consideration is that the wiring harness is sold separately, and the correct vehicle-specific harness may be required for plug-and-play installation. The controller is designed for electric trailer brakes, so buyers should verify both the tow vehicle and trailer brake configuration before purchasing.
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