Cruse control does not come on at all

Hi,

Are there any diagnostic trouble codes? Here is a list of OBD 2 codes if there are any present:

https://www.2carpros.com/trouble_codes/obd2

Next, have you checked for a signal from all of the wheel speed sensors? There could be one not working properly and sending a different speed.

Also, in this case, you may want to scan the CAN bus system to see if there is an issue between modules. CAN stands for computer area network. It ties all of the modules together. Here is a video explaining how it's done and why it can be helpful:

https://youtu.be/InIlnsjOVFA

Let me know if that helps.

Joe

Okay. If it isn't working at all, it could be a servo, module, cable, switch, and so on. I am going to provide the diagnostics related to checking the switch and then the unit. Before you get started, make sure to check the fuses listed at the end of the diagnostics listed.

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2005 Hyundai Truck Santa Fe V6-2.7L
Component Tests and General Diagnostics
Vehicle Sensors and Switches Sensors and Switches - Cruise Control Cruise Control Switch Testing and Inspection Component Tests and General Diagnostics
COMPONENT TESTS AND GENERAL DIAGNOSTICS
CRUISE CONTROL MAIN SWITCH
1. Operate the switch and check for continuity between the terminals.

Pic 1

2. If continuity is not as specified, replace the switch.

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2005 Hyundai Truck Santa Fe V6-2.7L
Component Tests and General Diagnostics
Vehicle Cruise Control Testing and Inspection Component Tests and General Diagnostics
COMPONENT TESTS AND GENERAL DIAGNOSTICS
TROUBLESHOOTING

see pic 2

NOTE: Before troubleshooting:
- Check the No.4 (10 A), No.14 (10 A), No.19 (10 A) fuse In the passenger compartment relay box.
- Check ECU #3 (10 A) fuse in the engine compartment relay box.
- Check that the horn sounds.
- Check the tachometer to see if it works properly

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Let me know.

Joe