Kia Optima DL3: Cruise Control System / To increase cruise control set speed

Follow either of these procedures:

  • Move the lever up (to RES+) and hold it. Your vehicle set speed will increase by 10 km/h (5 mph). Release the lever at the speed you want.
  • Move the lever up (to RES+) and release it immediately. The cruising speed will increase by 1.0 km/h (1.0 mph) each time you move the lever up (to RES+) in this manner.

    1. Press the CRUISE button on the steering wheel to turn the system on. The CRUISE indicator light in the instrument cluster will illuminate. 2. Accelerate to the desired speed, which must be more than 30 km/h (20 mph).

    Follow either of these procedures: Move the lever down (to SET-) and hold it. Your vehicle will gradually slow down. Release the lever at the speed you want to maintain.

    Other information:

    Kia Optima DL3 2019-2025 Service and Repair Manual: Compressor oil

    Repair procedures Oil Specification 1. The HFC-134a system requires synthetic (PAG) compressor oil whereas the R-12 system requires mineral compressor oil. The two oils must never be mixed. 2. Compressor (PAG) oil varies according to compressor model.

    Kia Optima DL3 2019-2025 Service and Repair Manual: Evaporator Core

    Repair procedures Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the heater and blower assembly. (Refer to Heater - "Heater Unit") 3. Loosen the mounting screws, lock pin and remove the evaporator core cover (A).

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