Body Electrical
Cruise Control Module
A cruise control module reads your speed and switch inputs and controls the throttle to hold the speed you set. We carry 30 cruise control modules from $8 to $483 for 1978-2014 vehicles, led by Programa and A1 Cardone, with fits for Mercedes 300TD, 300E and 300SD models, the GMC S15, Chevrolet Astro and Oldsmobile Bravada.
A1 Cardone Cruise Control Module 34-1876 for Chevrolet S10 Blazer
Fits 1987–1994 models
A1 Cardone Cruise Control Module W0133-2229885 for Chevrolet Astro
Fits 1995–2002 models
A1 Cardone Cruise Control Module W0133-2229885 for Chevrolet C1500 Suburban
Fits 1995–2000 models
A1 Cardone Cruise Control Module W0133-2229885 for Oldsmobile Bravada
Fits 1996–2001 models
AC Delco Cruise Control Module W0133-1865844 for Buick Park Avenue
Fits 1999–2005 models
Programa Cruise Control Module 002 545 91 32 for Mercedes 300CD
Fits 1983–1985 models
Programa Cruise Control Module 002 545 91 32 for Mercedes 300D
Fits 1983–1984 models
Programa Cruise Control Module 002 545 91 32 for Mercedes 300TD
Fits 1984–1985 models
Programa Cruise Control Module 005 545 12 32 for Mercedes 300CD
Fits 1978–1981 models
Programa Cruise Control Module 005 545 12 32 for Mercedes 300TD
Fits 1979–1980 models
Programa Cruise Control Module 023 545 21 32 for Mercedes 300TD
Fits 1987–1994 models
How the module works
When you press set, the module stores your road speed and then opens or closes the throttle to hold it. On older vehicles it often drives a vacuum servo or a cable actuator. Depending on the design, the module may be a separate box, an amplifier mounted near the pedals, or combined with the servo. It cancels cruise when it sees the brake switch, the clutch switch or the off button, so all of those inputs have to work.
Diagnose before you replace
Typical complaints are cruise that will not engage, cruise that drops out on its own, or a speed that surges up and down. Many of these come from simpler faults. Check the fuse, the brake light switch, the switch on the stalk or wheel, vacuum hoses and the vehicle speed signal before blaming the module. A brake light that is out can stop cruise from engaging on many vehicles. If all inputs test good and the module gets power and ground, a replacement is the next step.
Finding the right module
Modules are tied to specific vehicles and engines, and many Mercedes units here are identified by part number. Choose your year, make and model, then check the fitment table and compare the number on your old module's label with the listing. Remanufactured units from A1 Cardone and Programa are rebuilt versions of the original design. Disconnect the battery before unplugging the module, and refit any vacuum lines exactly as they came off.
Cruise Control Module questions
Why does my cruise control not engage?
Common causes include a blown fuse, a faulty brake light switch, a bad control switch, a vacuum leak on older systems, or a missing speed signal. Check these before replacing the cruise module, since they are cheaper and fail often.
Where is the cruise control module located?
It varies by vehicle. On many older cars and trucks it sits under the dash, near the pedals, or in the engine bay beside the servo. Your service manual or the old part number will show the location.
Can a bad cruise module cause surging?
Yes. A module that controls the throttle poorly can make speed rise and fall while cruise is set. Vacuum leaks, a sticky throttle cable or a bad speed sensor can cause the same symptom, so check them too.