After turning my car on, at random times (more frequently lately) my electric windows, cruise control and air blower does not work. Sometimes it will come on a few minutes later and sometimes it doesn't at all. Not sure if this would be wiring or what.......thanks
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It's probably a problem with cruise control module , located under the hood in engine compartment . Or a bad connection somewhere . Do you know how to do electrical testing ? Is the air bag light lit on the instrument cluster ?
Could have DTC'S - diagnostic trouble code's stored .
The powertrain control module (PCM) inhibits cruise control operation when certain conditions are not appropriate for cruise control operation. The PCM removes the ground from the cruise control inhibit signal circuit in order to disengage cruise control operation.
Output driver modules (ODMs) are used by the powertrain control module (PCM) in order to turn on many of the current driven devices that are needed to control various engine and transaxle functions. DTC P1558 set indicates that an improper voltage level has been detected on the signal circuit which controls the cruise control inhibit circuit.
Action Taken When the DTC Sets
• The PCM will not illuminate the malfunction indicator lamp (MIL).
• The PCM will store the conditions present when the DTC set as Failure Records data only.
Cruise control is a speed control system that maintains a desired vehicle speed under normal driving conditions. However, steep grades may cause variations in the selected speeds. The electronic cruise control system has the capability to CRUISE, COAST, RESUME SPEED, ACCELERATE, and TAP-UP or TAP-DOWN.
The main parts of the cruise control system are:
• The cruise control module assembly
• The function control switches
• The cruise control release switch
• The clutch pedal position switch (CPP), if equipped
• The stop lamp switch assembly
• The vehicle speed sensor
The cruise control system uses the cruise control module assembly to maintain the desired vehicle cruise speed and operation. The cruise control module assembly has an electronic controller and an electric stepper motor to vary the throttle in each different cruise control mode. The electric controller monitors vehicle speed and operates the electric stepper motor. The stepper motor operates in response to the electronic controller, to maintain the desired cruise speed. The electric stepper motor moves a strap that is attached to the cruise control cable which moves the throttle linkage. The cruise control module assembly contains a low speed limit which will prevent system engagement below a minimum speed of 40 km/h (25 mph). The module assembly is not serviceable.
check the vacuum lines for leaks first,since the cruise uses vacuum to pull on the gas pedal, and ac controls use vacuum to work the baffle doors in the ductwork..then start looking for loose connections on these 3 itemsrepost findings
Me a sparky too - found this on another website and it worked - for rear windows - you need to find a switched hot and splice it into the white wire going into the electric window ECM located on the far right side under the glovebox (I removed the glovebox, 4 7mm bolt on bottom to make easier). the white wire is staring right at you when you pull the glovebox out on the right side - part of a wire connector with purple.black.grey wires going into it. 12 gauge.
Sure enough babe! Often the problem is in the CONTROL BUTTONS (those on the steering wheel)... Yet again, I've see the problem point to the Cruise Control Module (Under the hood). Since you mentioned the 'CRUISE' light comes ON, but nothing else is working, I'd hazard a guess the control buttons are malfunctioning. If you press them REAL HARD, do they work? Otherwise, Take the vehicle into a Hyundai Service Center (dealership), pay the diagnostic fee. They will tell you EXACTLY what the problem is and what's needed to fix it (parts, labor, tax, time-frame, etc.).