Hyundai Elantra: Tire Pressure Monitoring System / TPMS Sensor Description and Operation
| Description |
| 1. |
General description
WU is a sensor placed in the tire that reports pressure and temperature.
The WU is mounted inside the wheels, fixed to the valve. The angle between the valve and the housing of the WU is variable.
This allows adaptation to various types of rims.
The Wheel Unit is made of a PCB supporting the electronic
hardware and encapsulated inside a housing which is potted with
polyurethane.
It is self-powered by a battery and includes all systems for
parameter measurement (pressure, temperature and centrifugal
acceleration and optionally rotation direction), RF transmission and LF
detection.
To achieve the specified battery lifetime, the WU supports
various measurement and transmission timings, depending on WU operation
mode.
For RF transmission, WU uses an internal antenna. |
| 2. |
First Block Mode
: When vehicle start driving, Sensor enter Mode First Block.
Typical period of RF emissions is 16 sec. for 40 times for Auto-learning and Auto-location function. |
| 3. |
Driving Mode
: After 19 min. parking and then finishing Mode First Block mode, WU enter Driving mode.
Typical period of RF emissions are 64 sec above 4g vehicle speed. |
| 4. |
Parking Mode
: at below 3g Vehicle speed, enter Parking mode.
Typical periodicities of RF emissions are 13 hours. |
Description and Operation
Description
TREAD Lamp
-
Tire Under Inflation / Leak Warning.
1.
Turn on condition
A.
When tire pressure is below allowed threshold
B.
When rapid leak is detected by the sensor.
C.
...
TPMS Sensor Repair procedures
Removal
1.
Remove the valve core and deflate the tire.
2.
Remove the side of the tire bead area from the wheel using tire changing machine .
•
The tire bead should ...
Other information:
Hyundai Elantra AD (2016-2020) Owners Manual: If the Engine Will not Start
If the Engine Doesn't Turn Over or Turns Over Slowly
Be sure the shift lever is in N (Neutral) or P (Park). The engine starts
only when the shift lever is in N (Neutral) or P (Park).
Check the battery connections to be sure they are clean and tight.
Turn on the interior light. If the ...
Hyundai Elantra AD (2016-2020) Service Manual: Engine Coolant Temperature Sensor (ECTS) Description and Operation
Description
Engine Coolant Temperature Sensor (ECTS) is located in the
engine coolant passage of the cylinder head for detecting the engine
coolant temperature. The ECTS uses a thermistor whose resistance changes
with the temperature.
The electrical resistance of the ECTS decreases as the ...
