Hyundai Elantra AD (2016-2020) Service Manual: Cylinder Head Repair procedures
Removal
Engine removal is not required for this procedure.
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Use fender covers to avoid damaging painted surfaces.
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To avoid damaging the cylinder head, wait until the engine
coolant temperature drops below normal temperature (20°C [68°F]) before
removin ...
Hyundai Elantra AD (2016-2020) Service Manual: Transaxle Control Module (TCM) Description and Operation
Description
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Monitors the vehicle's operating conditions to determine the optimal gear setting.
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Performs a gear change if the current gear setting differs from the identified optimal gear setting.
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Determines the need for Damper Clutch (D/C) activation and engages the clu ...