Tyre Tracks October 2009
Friday, 02 October 2009 00:00

SP Diagnostics Tyre Tracks News

- Tyre Pressure Monitoring - SPi Fact - New Technology - Garys Support Corner - Did You Know -


Tyre Pressure Monitoring


In an EU drive to reduce the carbon foot print of vehicles, all cars type approved from November 2012, and all vehicles manufactured from November 2014 will require Tyre Pressure Monitoring Systems (TPMS) fitted as standard.

Maintaining proper tyre inflation is essential for both fuel efficiency and better tyre performance. Deflated tyres can cause up to 4% increase in fuel consumption while reducing tyre lifespan by 45%. Tyres can lose 3-6% of pressure per month, and this may not be noticed by the driver, tyre safety organisations have estimated that up to 80% of cars on UK roads have tyres that are incorrectly inflated, deflated tyres are also an important factor causing road accidents.

There are two systems, direct and indirect, and approach the monitoring of a tyre’s pressure in different ways. The tyre industry favours solutions such as the direct system which places a pressure sensor in each wheel and transmits reliable pressure measurement information back to the car data centre which then informs the driver immediately about the condition of its tyres.

The indirect system, favoured by some car companies and supported by OICA (Organisation International Constructeurs d’Automobiles), is a less expensive option, and measures the rotation rate of the tyres and compares one wheel against the others. Some systems perform an analysis of the vibration characteristics using the ABS sensors. The car’s computer (ECU) analyses the data and works out if the tyre is changing diameter and the software interprets this as a loss of tyre pressure. The delay in providing this information to the driver is considerable opening up the possibility of a rapidly deflating tyre not being detected and the possibility of an accident, due to its limitations, independent research proves that the indirect system also compromises two other important environmental benefits that flow from the fitment of TPMS, reducing CO2 emissions and saving fuel, under inflated tyres are known to have a detrimental impact in both of these areas.


Tyre Tracks SPi Facts

Did you know that the SPi is Fast ISO capable! New BMW systems communicate with diagnostic testers using the Fast ISO protocol, and this is available on the SPi without any extra harnesses, adapters or updates.


New Technology

The majority of businesses are investing in new technology to change working practices, says a report by serviced office company Regus and business consultancy JBA. More than two-thirds of businesses are implementing technological changes to their workplaces over the next three years.

Some 28 per cent of companies say they will invest in practices such as flexible working and more than 40 per cent intend to change their workplace models to become more collaborative.

John Blackwell, chief executive of JBA, says: ‘From our report it’s clear that business leaders, focused on out-performing their competitors, are rising to the challenging times with radical changes.’

Of the 1,130 business leaders asked, 67 per cent said that investment in practices such as flexible working will have a positive organisational impact.



Did you know?

We do the following: Japanese vehicle coverage, TPMS programming, Jaguar, Diesel particulate filter resets, Mercedes assyst plus service light resets, New BMW CBS service light resets, Land rover, SAAB, Volvo, Korean vehicle coverage, Grey import coverage.... Keycoding & Pin extraction, Easy USB update process, Electronic park brake, Injector programming, Steering angle programming, Airbag configuration, Mercedes SBC, Ford KAM reset, Oil degradation, Manual service reset procedures, Easy to use testing, Save & print screens, Free UK based technical telephone support, Manufactured and supported in the UK.

Peugeot/Citroen fuel additive light reset procedure

First of all….

ACR4 users check the manual to see which system is fitted to the car you are working on and which lead to use.

SPi users just pick the car from the menu and smile to yourself.

These systems are designed to trap and then burn off diesel particles in a filter inside the exhaust system by raising the temperature to 500ºC (same temp as the wife’s bath water). This is achieved with an additive.

The filter should be changed every 40,000 to 50,000 miles. Fill additive tank when the reservoir is empty, approx 5 litres, don’t spill any as it’s more expensive than beer.

Replace the filter then select “Replace Filter” (obvious really) on the handset so it zero’s the value. Then do the same on “Additive Reset” reset to zero.

Now for the difficult bit… disconnect the code reader from the car and run around (walking quickly is acceptable if you’ve had a big lunch) and remove the diesel filler cap (just opening the flap will not work) within 1 minute. That’s it! the additive light should now be out.


For more information, take a look at the latest instruction manual and vehicle lists, on the SP Support website.


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