We are experiencing an increase in contact regarding Tyre Pressure Monitoring Systems (TPMS) as our network of nationwide retail partners, from tyrebays to alloy wheel specialists, have more enquiries regarding the product. The fitting of wheels and tyres is now infinitely more treacherous, due to the addition of TPMS valves/sensors.

Leading sensor manufacturer, Schrader, are emploring tyre fitters to use the TBT procedure, to alleviate the opportunities of damaging a customer’s sensors. Schrader’s process is documented below:

Test Before Touch Procedure:

Check the TPMS warning symbol on the dash:
Turns ON then OFF = TPMS is working fine
No light turns on = Is TPMS Fitted?
Stays ON = Low tyre pressure in one or more tyres.
Flashing ON = Potential sensor or system malfunction.
Check valve caps:
Are any missing?
Are they correct type – Metal stem = Plastic cap ; speak to customer before replacing or removing, as they are the prime reason for corroded stems and will weld themselves on.
Visually check the stems for damage, corrosion and breakage. If a fault is found discuss it with the customer and notify them that the TPMS requires servicing.
Check TPMS Sensors with a handheld scanner / diagnostic tool, such as our Ateq VT56 unit:
Test Before Touch – is the industry best practice.
Determine whether all sensors are functional and advise the customer of battery status.
Check actual pressure against TPMS reading.
Print pre-repair inspection report or complete a notice to the customer:
Should show date, make / model, owners name, reg number, TPMS notes from test and get customer to sign.
Discuss any battery issues with the customer – advise if one has failed it is likely that all will fail at around the same time. Batteries typically last 5-7 years.
Discuss any corrosion issues and be sure the customer is informed regards MOT legislation – TPMS sensors must be replaced with another TPMS rather than a standard stem.
Once the customer has been informed and with their approval begin work.

Now, although this is a rough framework to work towards, all aspects may not apply in the individual case, but being prepared for the presence of TPMS sensors is already a fantastic first step in avoiding damage (and cost) to the customer’s vehicle. Many tyre/service bays are experiencing a problem when changing the tyres, damaging a valve/sensor, then being responsible for the repair job – this is a costly habit to fall into.

Our TPMS products can help should a sensor be damaged, with our starter service kits and access to sensors with over 96% coverage of the market, you are able to rectify any sensor issues, ensuring the vehicle is TPMS and MOT compliant.
Source: Wheelwright Blog

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