REMOVAL AND INSTALLATION
| CAUTION | When WCM has been replaced, all key ID codes should be registered, referring to the ID code registration necessity judgment table ID CODES REGISTRATION JUDGMENT TABLE . |
Scheme 49
>> A << WCM INSTALLATION
Check that the top claw of WCM is fixed securely to the boss of steering lock and the antenna is not floated on the key cylinder.
Scheme 50
Scheme 50: DISASSEMBLY AND ASSEMBLY
<< A >> UPPER COVER REMOVAL
| CAUTION | To prevent damage to the transmitter, wrap a flat-tipped screwdriver with protective tape before prying. |
Insert a flat-tipped screwdriver in the area shown, and remove the upper cover by prying it with the screwdriver.
Scheme 51
<< B >> BATTERY REMOVAL
| CAUTION | Do not allow water or dust to enter the inside of the transmitter assembly when it is open. Also, do not touch the precision electronic device. To prevent damage to the transmitter assembly, wrap a flat-tipped screwdriver with protective tape before prying. |
Insert a flat-tipped screwdriver in the area shown, and remove the battery by prying it with the screwdriver.
Scheme 52
>> A << BATTERY INSTALLATION
| CAUTION | Do not allow water or dust to enter the inside of the transmitter assembly when it is open. Also, do not touch the precision electronic device. |
Install a new battery to the transmitter assembly with its (+) side facing towards the master key side.
Battery required for replacement: Coin type battery CR1620
Scheme 53
| CAUTION | Do not vary the angle of valve except at mounting on the rim. If varying the angle over and over, it may cause breakage of antenna plate resulting in the failure of TPMS transmitter. Ensure valve cap is always in place except when adjusting tire pressure. If the valve core and valve cap are replaced, use a genuine replacement part. The valve core is similar to a conventional one, but uses nickel plating to avoid corrosion. Replace the seal and seal washer with a new one every five years or when the tire is replaced. Do not drop the TPMS transmitter from height greater than 1 meter (3.3 feet). Do not expose the TPMS transmitter to extraneous magnetic fields. TPMS transmitter should not be stored at temperatures above 80°C (176°F). TPMS transmitter should not be exposed to temperatures above 100°C (212°F). If the TPMS transmitter is replaced, execute "Tire Pressure Sensor ID Registration" on scan tool MB991958 "Special Function". Be careful not to damage the TPMS transmitter. |
Scheme 54
<< A >> CAP/VALVE CORE/NUT REMOVAL
| CAUTION | Ensure cap is always in place except when adjusting tire pressure. |
- Remove the cap and valve core to deflate the tire.
- Once tire pressure is released, remove nut and let TPMS transmitter fall into tire.
<< B >> TPMS TRANSMITTER REMOVAL
| CAUTION | Be careful not to damage the TPMS transmitter. |
- Place on tire changing machine and break both tire beads ensuring that the TPMS transmitter remains in the bottom of the tire.
- Lubricate tire well and remove outer side of the tire.
- Reach inside the tire and remove the TPMS transmitter.
- Remove tire from rim using proper tire changing equipment procedures.
<< C >> SEAL/SEAL WASHER REMOVAL
| CAUTION | Do not vary the angle of valve except at mounting on the rim. If varying the angle over and over, it may cause breakage of antenna plate resulting in the failure of TPMS transmitter. Use a soft tool to remove the grommet and washer to prevent scratching the valve of the TPMS transmitter. |
Scheme 55
Scheme 56
- Hold the TPMS transmitter and the seal washer, then extract it, this also extracts the seal. Take care to not damage the valve thread.
- Clean the TPMS transmitter and the valve stem holding the valve as shown. Take care to support the rear of the valve with a thumb so that there is no movement of the stem.
>> A << SEAL/SEAL WASHER/TPMS TRANSMITTER/NUT INSTALLATION
| CAUTION | When installing a new seal and seal washer, make sure to support the valve stem base with a thumb so that there is no movement of the stem. Otherwise, the stem may protrude resulting in the breakage of antenna plate. |
Scheme 57
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Scheme 61
- Insert these up to the base of the TPMS transmitter, making sure to secure the valve base with a thumb, as shown. Wipe the seal and threading. CAUTION: Visually check that TPMS transmitter is not deformed or damaged. When installing the TPMS transmitter, be sure the rim, seal valve and nut are clean. Ensure the grommet is located inside the valve hole before installing the nut. While installing the nut, push the TPMS transmitter to maintain the lower lip of the transmitter case is in contact with the rim without clearance. While installing the valve nut, ensure the tool is kept aligned to the valve and the valve hole. After installing the nut, check that the seal is compressed and seal washer is bend.
- Install the valve, in the valve hole, without modifying the angle of the stem (retain position of delivery). The laser marking should be visible at the operator.
- When the valve is completely inserted, maintain the TPMS transmitter in contact with the rim, then screw manually the nut until the contact with the wheel.
- While maintaining the TPMS transmitter contact with the rim by applying pressure to the back of the valve, slightly press on the cap to wards the center of the wheel in order to adapt the angle of the valve/TPMS transmitter to the profile of the rim. It is mandatory to guarantee the contact of the housing unit on the rim drop center.
- While maintaining the TPMS transmitter and valve in position, screw the nut with a torque wrench. Take care that the wrench socket is correctly inserted on the nut. Specified torque: 8.0 ± 0.5 N.m (71 ± 4 in-lb)
Scheme 62
Scheme 62: >> B << TIRE BEAD MOUNTING
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Scheme 67
- Prepare the tire and fix the rim as usual.
- Put the tire on the rim, so that the cross point of the belt with the rim is approximately 20 cm (7.9 inch) away from the valve.
- Engage the shoe and make sure that 20 cm (7.9 inch) is maintained between the cross point and the valve. The arrow shows the direction of rotation of the wheel.
- Turn the wheel in order to engage all the first side of the tire. NOTE: The standard shoes can pass over the sensor with out damaging it.
- Put the second side of the tire in position, so that the cross point of the belt with the rim is approximately 20 cm (7.9 inch) away from the valve. The curved arrow shows the direction of rotation of the wheel.
- Turn the wheel in order to engage all of the second side of the tire. NOTE: The standard shoes can pass over the sensor with out damaging it.
