Insert the master key into the cylinder all the way until you hear a click.
How to remove thule roof rack lock.
Open the doors on both sides of the vehicle below where the roof bar is mounted.
Unlock the outer housing or lockable knob at the base of the feet using the thule key that came with the set.
How to remove thule roof bars step 1.
Turn the lock to the unlock position using the regular locking key.
Then try using the locking key.
Obtain a master key.
Twist the knob on the foot counterclockwise to loosen.
Press your finger against the lock cylinder to keep it in place and use your other hand to pull out the master key.
If you cannot find the master key that came with your thule product you can obtain one at a local thule retailer or by calling thule at 800 238 2388.