Mercedes TPMS Replacement
If a sensor proves faulty or is damaged then it will need to be replaced. This requires a new sensor to be fitted and the ECU to be reprogrammed with its unique ID and its position on the vehicle. The procedures for all vehicles are illustrated in the Bartec 'Tire Pressure Monitoring Systems Guide' which shows service requirements, reset procedures, dismounting/mounting instructions, torque specifications etc for all makes/models and years.
The technician should always: refer to manufacturer's specifications for proper torque requirements when replacing nuts and valve cores; use new grommets, nuts, plastic or nickel-plated valve caps and electro-less, nickel-plated valve cores when performing any tire service; never use a brass valve core or un-plated brass cap with an aluminum TPMS sensor stem. Contact between dissimilar metals can cause galvanic corrosion, which can lead to loss of air pressure.
Bartec tools offer the capability to carry out a TPMS audit of the car and then show the customer the audit results from the screen or download them to a PC and print the audit results to show to the customer so that a cost can be agreed and the go ahead given before work commences. It is important to have a tool which can distinguish the correct TPMS in order to avoid picking up the transmission of other TPMS sensors, key fobs etc. It is important to limit your liability for any problems which occur.
The TPMS tool should be able to decode the transmission from the sensor and display the data. This will enable the technician to establish if the sensor has failed or is not fitted, whether the pressure port on the sensor is blocked, where the part is running at too high a temperature and other diagnostic information which might be included in the specific sensor (e.g. if there is a low battery condition on the TPMS).
The direct TPMS will be attached to the back of the tire valve.
Your vehicle may have banded sensors (banded to the wheel) which are manufactured by VDO and Lear or stemmed sensors manufactured by Schrader. If you have banded sensors then the TPMS tool needs to be held on the tire at 180 degrees to the valve stem before activation. If the TPMS is mounted on the back of the valve stem then the TPMS tool will need to be held on the tire adjacent to the valve stem before activation.
If you get a no read on a banded sensor this may be because it has slipped on the band so you will need to retry at other positions before concluding the sensor is faulty.
Contact Your TPMS Tool Dealer
Customers have told us our help desk guys are the best because of their wealth of information and experience; that they care about helping; and that they try that bit harder to sort out problems.
When you buy a Tech600Pro TPMS tool you get a free copy of the Bartec 'Tire Pressure Monitoring Systems Guide' and also gain access to the Bartec TPMS technical support for advice on replacement of TPMS and the use of TPMS tools on all vehicles not just Mercedes.
The team has a wealth of experience with TPMS. These guys have worked in the car plants and also in the aftermarket solving the problems you are addressing.
Please browse our website for more information about Bartec USA LLC and our range of Mercedes TPMS Tools and our professional support for Mercedes Tire Pressure Monitor Sensors, then call toll free (866) 407-TPMS and speak to one of our team or e-mail us on sales@bartecusa.com.
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