Hyundai Santa Fe: Brake System / Specifications

Hyundai Santa Fe (TM) 2019-2024 Service Manual / Brake System / Specifications

Specifications

Item		Specification
Master cylinder	Type	Tandem
	I.D. mm (in)	22.22 mm (0.87 in)
	Piston stroke mm (in)	45 mm (1.77 in)
Brake booster	Type	11" Tie-rod
Brake booster	Boosting ratio	1899-12-31T09:01:00.000
Front disc brake	Type	Ventilated disc
	Disc O.D	325 mm (12.80 in)
	Disc thickness	30 mm (1.18 in)
	Cylinder type	Single piston
	Cylinder I.D.	Ø 63.5 mm (2.50 in)
Rear disc brake (16 inch)	Type	Solid disc
	Disc O.D	305 mm (12.0 in)
	Disc thickness	11 mm (0.43 in)
	Cylinder type	Single piston
	Cylinder I.D.	Ø43.00 mm (1.69 in)
Rear disc brake (17 inch)	Type	Ventilated disc
	Disc O.D	325 mm (12.80 in)
	Disc thickness	20 mm (0.78 in)
	Cylinder type	Single piston
	Cylinder I.D.	Ø43.00 mm (1.69 in)
Parking brake	Type	Electronic parking brake
HECU	System	4 Channel 4 Sensor control system (Total control ABS, TCS, EBD, ESP)
	Type	Motor, valve relay intergrated type (ECU, TCU and CAN)
	Operating Voltage	8 ~ 16V
	Operating Temperature	-40°C ~ 110°C
	Motor power	Normal / integrated ESC / ESCi : 310W
	Motor power	integrated+ ESCi : 370W
Active Wheel speed sensor	Supply voltage	DC 4.25 ~ 20V
	Output current (low)	5.95 ~ 8.05 mA(Type, 7 mA)
	Output current (high)	11.9 ~ 16.1 mA(Type, 14 mA)
	Output range	0.03 ~ 3,000 Hz
	Tone wheel	Front : 52 teeth, Rear : 52 teeth
	Air gap	0.4 ~ 1.5 mm
Steering Wheel Angle Sensor	Operating Voltage	8 ~ 16V
	Current Consumption	Max. 150 mA
	Output measurement range	-780 ~ + 779.9°
	Operating Angular velocity	0 ~ 1016°/sec

Service Standard

Items	Standard value
Brake pedal height	135 mm (5.31 in)
Brake pedal Full stroke	176 mm (6.93 in)
Stop lamp switch clearance	1 - 2 mm (0.04 in - 0.08 in)
Brake pedal free play	2 - 4 mm (0.08 in - 0.16 in)
Front brake disc pad thickness	11 mm (0.43 in)
Front brake disc pad service limit	2 mm (0.07 in)
Front brake disc thickness	30 mm (1.18 in)
Front brake disc service limit	28 mm (1.10 in)
Rear brake disc pad thickness (16 inch)	10 mm (0.31 in)
Rear brake disc pad service limit (16 inch)	2 mm (0.07 in)
Rear brake disc pad thickness (17 inch)	10 mm (0.31 in)
Rear brake disc pad service limit (17 inch)	2 mm (0.07 in)
Rear brake disc thickness (16 inch)	11 mm (0.43 in)
Rear brake disc service limit (16 inch)	9 mm (0.35 in)
Rear brake disc thickness (17 inch)	20 mm (0.78 in)
Rear brake disc service limit (17 inch)	18 mm (0.70 in)

Tightening Torques

Items	N.m	kgf.m	lb-ft
Master cylinder to brake booster	12.7 - 16.7	1.3 - 1.7	9.4 - 12.3
Brake booster mounting nuts	16.7 - 25.5	1.7 - 2.6	12.3 - 18.8
Air bleeding screw	13.7 - 19.6	1.4 - 2.0	10.1 - 14.5
Brake tube flare nut, brake hose	13.7 - 16.7	1.4 - 1.7	10.1 - 12.3
Front caliper guide rod bolts	37.3 - 41.2	3.8 - 4.2	27.5 - 30.4
Rear caliper guide rod bolts	37.3 - 41.2	3.8 - 4.2	27.5 - 30.4
Front caliper assembly mounting bolt	98.1 - 117.7	10.0 - 12.0	72.3 - 86.8
Rear caliper assembly mounting bolt	98.1 - 117.7	10.0 - 12.0	72.3 - 86.8
Brake hose to caliper	24.5 - 29.4	2.5 - 3.0	18.1 - 21.7
Brake pedal member bracket bolt	16.7 - 25.5	1.7 - 2.6	12.3 - 18.8
Wheel speed sensor mounting bolt	8.8 - 13.7	0.9 - 1.4	6.5 - 10.1
HECU bracket mounting nut	16.7 - 25.5	1.7 - 2.6	12.3 - 18.8

Lubricants

Items	Recommended	Quantity
Brake fluid	DOT 4	As required
Brake pedal bushing and bolt	Chassis grease	As required
Parking brake shoe and backing plate contacting surface	Heat resistance grease	As required

Brake System

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