Thule Sonic 633 Instructions
![Thule Sonic 633 manual cover](/images/10b19c7319b5077fd8e19cf0/thumbs/thumb175x175.webp)
To install the Thule Sonic 633, first ensure that your vehicle's roof rack is compatible. Position the Sonic 633 on the roof rack, align the clamps with the crossbars, and secure them tightly using the included torque tool. Ensure the box is centered and balanced.
The Thule Sonic 633 has a maximum load capacity of 110 lbs (50 kg). Ensure not to exceed this limit to avoid damage to the box or your vehicle.
Regularly clean the Thule Sonic 633 with mild soap and water. Avoid abrasive cleaners. Lubricate locks and hinges with silicone spray periodically, and inspect the mounting hardware for signs of wear or damage.
Yes, the Thule Sonic 633 features dual-side opening, allowing you to access your gear from either side of the vehicle, which is convenient for loading and unloading.
If the key gets stuck, gently wiggle it while applying a small amount of lubricant, such as graphite powder, into the lock. Avoid using excessive force to prevent breaking the key.
After installation, double-check that all clamps and fasteners are tightened according to the manual. Shake the box gently to ensure there is no movement, and periodically check the tightness during long trips.
If you notice noise, check if the box is properly secured and that all clamps are tightened. Also, ensure that the load inside is evenly distributed and not shifting during transit.
The Thule Sonic 633 is designed to be weather-resistant, providing protection against rain and splashes. However, it is not completely waterproof, so take precautions with sensitive items.
Store the Thule Sonic 633 in a cool, dry place away from direct sunlight. Place it on a soft surface or hang it using a Thule storage lift to prevent any damage to its structure.
Ensure that the box is not overfilled and that no objects obstruct the closing mechanism. Inspect the hinges and locking system for any debris or damage and clean or repair as necessary.