Hyundai Ioniq: Intake and Exhaust System / Muffler. Repair procedures
Front Muffler
1. | Disconnect the battery negative terminal. |
2. | Disconnect the oxygen sensor connector (A). 
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3. | Remove the heat protector (A). Tightening torque : 9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft) |

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4. | Remove the front muffler (A). Tightening torque : 39.2 - 58.8 N.m (4.0 - 6.0 kgf.m, 28.9 - 43.4 lb-ft) |

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5. | Install in the reverse order of removal. •
| When installing, replace with new gaskets. |
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GPF
1. | Disconnect the battery negative terminal. |
2. | Remove the exhaust gas temperature sensor (EGTS) #1,#2. (Refer to Engine Control / Fuel System - "Exhaust Gas Temperature Sensor (EGTS)") |
3. | Remove the GPF (A). Tightening torque : 39.2 - 58.8 N.m (4.0 - 6.0 kgf.m, 28.9 - 43.4 lb-ft) |

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4. | Install in the reverse order of removal. •
| When installing, replace with new gaskets. |
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Center Muffler
1. | Remove the center muffler (A). Tightening torque : 39.2 - 58.8 N.m (4.0 - 6.0 kgf.m, 28.9 - 43.4 lb-ft) |

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2. | Install in the reverse order of removal. •
| When installing, replace with new gaskets. |
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Rear Muffler
1. | Remove the rear muffler (A). Tightening torque : 39.2 - 58.8 N.m (4.0 - 6.0 kgf.m, 28.9 - 43.4 lb-ft) |

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2. | Install in the reverse order of removal. •
| When installing, replace with new gaskets. |
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Other information:
Inspection1.Connect the GDS on the Data Link Connector (DLC).2.Measure the output voltage of the RPS at idle and various engine speed. Condition Output Voltage (V) Idle Approx. 1.21,500 rpm2...
Component Location[Front Seat Heater (Non-Air ventilation)]1. Seat heater unit (Passenger seat only)2. Seat chusion heater3. Seat back (Heater)[Front Seat Heater (Air ventilation)]1. Air ventilation unit (Passenger seat only)2. Seat cushion (Heater)3...
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The seatback pocket is provided on the back of the front passenger's seatback.
WARNING
To prevent the Occupant Classification System from malfunctioning:
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