The factory Mazda & Ford 6 speed automatic cooling system explained

Fitted to the Australian delivered Ford Ranger & Mazda BT-50 6 speed automatic transmissions is a transmission cooler thermostatic cooler by-pass valve. Located in the passengers side of the transmission housing under the valve body assembly. The Thermostatic Valve blocks the cooler flow until the desired operating temperature is reached. The spring will shrink allowing the sleeve to move up and open up the port to the cooler.

Although shift quality is smoother when the transmission fluid is at operating temperature. The 6R80 transmission is known for debris from internal bushings and the torque converter wear which can cause the factory thermostat valve sleeve to stick and block the cooler port.

If the sleeve gets jammed the transmission will not flow any fluid through the factory heat exchanger cooling unit. Most warning system will not activate until the transmission fluid temperature reaches above 130c.

Blocking the factory by-pass area and giving full time cooler flow.


Available now is a unique full time flow valve allowing full time cooler flow and still the availability to have full time lubrication if the cooler becomes blocked or flow restricted. When fitted the average transmission fluid temperature is lowered meaning internal components are lubricated with lower temperature fluid.

The fluid will take longer to reach operating temperature but the benefit is a 5c - 7c degree drop in operating temperature. This allows less internal component wear and full time cooler flow allowing for easier fluid level correction.


The factory thermostatic valve increases the chance of an incorrect fluid level due to the transmission fluid required to reach operating temperature to allow cooler flow. With the full flow valve fitted checking the fluid level is easier and safer due to the lower temperature reducing the risk of personal injury.

Removing the factory heat exchanger and fitting an external transmission oil cooler will now receive full flow allowing for the added cooling efficacy of an air to oil cooler.

Fitting the valve will require the transmission sump and valve body assembly to be removed which require a new transmission sump gasket, filter, valve body to case plug, valve body top case block & valve body to case tubes.

Call us today to make a booking and get this valve fitted…

See Also…

  • Servicing your Ford Ranger/Mazda BT-50 6 speed Automatic transmission

  • Fitting and oil to air transmission fluid cooler to your Ford Ranger/Mazda BT-50

  • Upgrading to the Billet 6R80 Lock Up Torque Converter before it to late.

Audi / Volkswagen 7spd DSG loss of drive & reverse gears

Volkswagen Audi & Skoda 7 speed 0AM DQ200 Mechatronics failure

In 2008 the release of the 7 speed dry clutch DSG transmission was fitted to lower torqued engines below 250NM. Known as the DQ200 or 0AM dual clutch transmission it is 23kg lighter than the 6 speed DQ250/02E wet clutch transmission.

The DQ200/0AM includes three main components the Dry Dual Clutch assembly, the mechatronics unit with it own oil supply and the main gearbox assembly. The gearbox when on its own works like a regular front wheel drive manual transmission.

Servicing the 0AM Transmission

There is a schedule to change the fluid every 60,000kms or 48 Months, the bearings inside of the transmission are known to wear causing debris which can cause issues with the shift rail sensors. The dual clutch touch points can also be re learnt during a service procedure to help eliminate clutch wear due to clutch shuddering normally during the 2nd gear application.

Known Problems with the Mechatronics unit

The mechatronics unit is made up of 4 main components
No.1 The Control module with integrated sensors.
No.2 Internal electric oil pump
No.3 Apply pistons operated by solenoids
No.4 Pressurised accumulator.
The most common problem with the Mechatronic Unit is loss of drive & reverse and signs of green or blue fluid under the vehicle. If the transmission module is scanned the following codes maybe present.

  • 006300 - Function Restriction due to Insufficient Pressure Build-Up – P189C
  • 006079 – Hydraulic Pump – P17BF
  • 17225 - Transmission Fluid Pressure Sensor/Switch 1 - P0841

As the mechatronics unit is supplied by the dealer as a complete unit if any of the internal components fail the whole unit will need to be replaced.

Mechatroincs Unit Repair Available.

We can now offer our customers a repair option for the above failure saving customers up to $1000-$2000 is some cases. 

Effected Models

To confirm your vehicle is fitted with a 7 speed DQ200 transmission look at your gear shifter it should have DSG imprinted into the chrome. Also if the vehicle is still driving the applied gears will display on your dash then counter the up shifts to 7th on a freeway.

  • Audi A1
  • Audi A3
  • Skoda Fabia
  • Skoda Octavia
  • Volkwagen Caddy
  • Volkswagen Golf
  • Volkswagen Polo

Audi A S & Q Series 7 speed DSG transmission problems


Various Audi Models from 2010 on wards suffer from a VARIETY of symptoms of a faulty Automatic Transmission.

The 7 speed dual clutch automatic transmission known as the 0B5 unit, uses an internal mechatronics unit, components on this unit fail causing various problems. Loosing reverse gear or having it slip or shudder is a common issue. Using a diagnostic scan tool and live data information the internal components can be tested and checked. The internal dual clutch unit is common for failing causing internal gear selection problems also.

Known Symptoms of Failed Mechatronics Unit 

  • Loss or Intermittent Reverse Gear.
  • Engine Light due to Faulty Solenoids.
  • Engine Light due to Faulty Speed Sensors.
  • Rough Gear Shifts due to above faults.

Known Symptoms of Failed Dual Clutch Assembly

  • Loss of Gears normally Reverse and all even numbered gears.
  • Slipping or Shuddering of gears.
  • Mechanical Disengagement of gears causing Engine light.
  • Jolting of Gear Changes on up shifting and down shifting.

After diagnosis is complete we can determine the faulty components that need to be replaced. Using parts sourced directly from components manufactures rather than Audi spare parts we can carry out repairs rather than complete replacement of expensive components. Put simply rather than fitting a complete new mechatronics unit we can fit a new solenoids which could be a saving of 70% on the parts cost.   

0B5 Mechatronics Repair Kit

0B5 Mechatronics Repair Kit


Effected Audi Vehicles from late 2008 onwards

  • Audi A7 Quattro Petrol & Diesel Engine Vehicles
  • Audi A8 Quattro Petrol & Diesel Engine Vehicles
  • Audi Q5 QuattroPetrol & Diesel Engine Vehicles
  • Audi S5 QuattroPetrol & Diesel Engine Vehicles

Related Links...

BMW 6L45 Mechatronics Repair Kit 24607623883

For a long time BMW have used General Motors automatic transmissions in various models.

One unit that seems popular is the GM 6L45E 6 Speed Automatic Transmission with integrated Mechatronics unit. Now this transmission is the little brother the 6L80E transmission commonly found in the Holden Commodores from 2006-ON. 

This design of the Automatic Transmission uses an internal Transmission Control Module and Solenoid Pack known as a Mechatronics. Like any transmission with solenoids they are known to have problems and require the mechatronics to be replaced due to the solenoids being part of and sealed in the mechatronics unit. One would think being of GM origins the replacement part would be cheap and interchangeable quite easy. Unfortunately this is not the case the unit is specifically designed for BMW software only and if you where to use a Holden Commodore unit the BMW software wont load.

Common SYMPTOMS of faulty units

  • Drive ability shifting complaints mainly around 2nd - 3rd gear up shifts and also 4th - 3rd gear downshifts. 
  • Communication codes between transmission control module, ABS module and engine control module.
  • Transmission Solenoids codes.

Replacement mechatronics Units

To purchase a replacement Mechatronic unit from the BMW dealer can be expensive. We source our replacement genuine units directly from the manufacture warehouse which we can then code to suit our vehicles.  

related BMW Models...

BMW 1 Series (E82,E88) 128i Convertible 2006 - 2014
BMW 1 Series (E82,E88) 128i Coupe 2006 - 2014
BMW 3 Series (E21,E30,E36,E46,E90,E91,E92,E93) 323i Sedan 2006 - 2009
BMW 3 Series (E21,E30,E36,E46,E90,E91,E92,E93) 328i Convertible 2005 - 2010
BMW 3 Series (E21,E30,E36,E46,E90,E91,E92,E93) 328i Coupe 2005 - 2010
BMW 3 Series (E21,E30,E36,E46,E90,E91,E92,E93) 328i Sedan 2006 - 2009
BMW 3 Series (E21,E30,E36,E46,E90,E91,E92,E93) 328i Wagon 2004 - 2009
BMW 3 Series (E21,E30,E36,E46,E90,E91,E92,E93) 328xi Coupe 2005 - 2010
BMW 3 Series (E21,E30,E36,E46,E90,E91,E92,E93) 328xi Sedan 2006 - 2009
BMW 3 Series (E21,E30,E36,E46,E90,E91,E92,E93) 328xi Wagon 2006 - 2009
BMW X Series (E53,E70,E71,E83) X3 3.0i 2006 - 2011
BMW X Series (E53,E70,E71,E83) X3 3.0si 2006 - 2011

Hyundai i30 soft, harsh & flaring gear shifts 4 speed automatic

Hyundai i30 2008 to 2012 - 4 Speed Automatic Transmissions with various shifting problems.

A common problem we see with the 4 speed Hyundai automatic transmissions is noticeably bad shift quality when vehicles reach 60,000 - 90,000 km's. Another sign of a problem is very dark transmission fluid which can be seen on the dip stick. 

The problem is located in the hydraulic brains of the automatic transmission which is called the valve body. The internal parts of this unit wear which require the valve body assembly to be replaced. We source new genuine units direct from Korea which also include the internal wiring harnesses. This can be a saving to our customers of 40-50% on parts if compared to purchasing locally.

Known Faulty Valve Body Unit Symptoms

  • Delay into Reverse Gear.
  • Flare/Soft Shift into 3rd Gear.
  • Large Flare on 4-3 Downshift when around 80kms.
  • Harsh Shifts into 2nd & 4th Gear.

A valve body replacement does not require a complete overhaul of the automatic transmission. The fluid will need to be flushed so the new valve body assembly can operate correctly. The transmission control module will also need the shift point adaptions reset using a factory quality scan tool. 

Affected Hyundai Models

  • Hyundai Elantra SX (2006-2011) 2.0L Petrol
  • Hyundai i30 SLX (2007-2012) 1.6L Diesel (Sedan/Wagon)
  • Hyundai i30 SLX (2008-2012) 2.0L Petrol (Sedan/Wagon)
  • Hyundai i30 SX (2008-2012) 1.6L Petrol (Sedan/Wagon)
  • Hyundai i30 SX (2007-2012) 1.6L Diesel (Sedan/Wagon)
  • Hyundai i30 SX (2008-2012) 2.0L Petrol (Sedan/Wagon)

Affected Kia Models

  • Kia Cerato Coupe (2009-2012) 2.0L Petrol
  • Kia Cerato S, Si (2009-2013) 2.0L Petrol (Sedan/Hatchback)
  • Kia Cerato SLi, SRi (2009-2013) 2.0L Petrol (Sedan/Hatchback)

Related Links...

Driveline Maintenance and are you accountable?


Customers often ask should they service their transmission and or change the oil in there differential/transfer case in their vehicle?

My answer is simple if you’re asking that question I recommend you to get it done. Now if you’re in the category of customer who just drops off your vehicle to your local mechanic and hope all recommend fluid changes are behind done most likely they are to the manufactures recommendations. However manufactures now label driveline components fill for life and this means dealer mechanics & regular independent shops won’t change any driveline fluids.

What is Fill For Life?

Fill for life is a term used in late model motor vehicles when it comes to driveline components. Now to use an example I’ll use a 6 speed automatic transmission in a 2008 BMW. Now BMW have a vehicle which requires a 6 speed transmission but BMW don’t manufacture transmissions. This is where ZF a driveline component manufacture is approached to supply BMW with driveline components. This is where the sales pitch starts for ZF to win and secure the contract to supply.

Transmission Manufacture

  • Can supply a sealed unit which is maintenance free during warranty period
  • Less warranty concerns due to untrained/qualified workmanship
  • Lower manufacturing costs of spare parts due to long jeopardy of units.
  • Increased unit production due to increased demand on long life units.

Vehicle Manufacture

  • A sealed unit which is maintenance free during warranty period
  • Minimal spare parts stock due to maintenance free unit.
  • Increased profits due to low cost units

Now for people who buy new vehicles and turn them over every 3-5 years this is all good news. This information it targeted to vehicle owners who plan to keep their vehicle more than 5 years and or who are the 2nd or 3rd owner of a late model vehicle.