How are Cruise Control Switch issues diagnosed?
Cruise control switches will be diagnosed by checking for proper functionality, inspecting the fuse, and testing the circuit for continuity. A lack of continuity across the cruise control switch will indicate the switch has failed, especially when the wire being tested corresponds to a feature that does not function. Note, the technician will verify beforehand that the switch is receiving power at the correct voltage before checking for signal coming from the switch. The basic idea is that proper input to the switch should yield proper output, otherwise the switch is faulty.
How are Cruise Control Switches replaced?
Replacing the cruise control switch can be very simple, even on models with steering wheel mounted controls. The switch will be removed from its housing with plastic pry tools, or the housing will be removed from around the switch by removing the trim retaining screws and clips. Once the switch is exposed, any remaining fasteners and electrical connectors can be removed. The new switch can be installed right after the electrical connectors are inspected for damage or debris. Finally, the trim panels can be reinstalled, if they were removed at all.
RepairPal Recommendations for Cruise Control Switch issues
Checking your fuses first is always recommended when it comes to electronics. All too often an electrical component is replaced only to find it still does not function. This is because without a good fuse, the system will not receive power.
What to look out for when dealing with Cruise Control Switch issues
Some makes and models use a brake light switch with two circuits. One for the brake lights, and the other to cancel the cruise control settings. If the circuit for the brake light switch has failed, the cruise control warning light may illuminate, so testing the switch is necessary before purchasing a replacement. If the airbag light is on, plus the cruise control switch on the steering wheel is not functioning, the first suspected component, after fuses, will be the clock spring, a.k.a. SIR coil behind the steering wheel. Testing the functionality of the horn and other steering wheel controls, as well as scanning for the airbag trouble code, may point this direction.
Can I replace the Cruise Control Switch myself?
For cruise control switches mounted on the steering wheel, great care should be taken not to damage the airbag assembly while performing this repair, otherwise this job should not be a problem at all. It may become frustrating dealing with the covers for the steering column if the cruise control switch is mounted on the side of the steering column, but even that process can be simple as long as patience is exercised.