Hyundai Elantra (CN7): Button Engine Start System / Components and components location
| Component Location |
| 1. Smart key unit (IBU) 2. Interior antenna 2 3. outside door handle | 4. Interior antenna 1 5. FOB Key 6. Door antenna |
| 1. Bumper antenna | 2. Trunk antenna |
DescriptionSystem OverviewThe System offers the following features:– Human / machine interface through a 1-stage button, for terminal switching and engine start.
Components and components location Component Repair procedures Removal1.Disconnect the negative(-) battery terminal.2.Remove the AVN Head unit.
Other information:
Hyundai Elantra (CN7) 2021-2026 Service Manual: Compressor oil
Repair procedures Oil Specification1.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. Be sure to use oil specified for the model of compressor.
Hyundai Elantra (CN7) 2021-2026 Service Manual: A/C Pressure Transducer
Description and operation DescriptionThe A/C Pressure Transducer (APT) converts the pressure value of high pressure line into voltage value after measuring it. By converted voltage value, engine ECU controls the cooling fan by operating it high speed or low speed.
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