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The car is now quite old, and the yellow gear ("cog") light indicates that the hydraulic pressure in the transmission is incorrect. Check fluid level and, if the fluid is murky or off-color, have the transmission serviced and the filter replaced.
Check your tire pressure. One of your tires has lost enough tire pressure to trigger this alarm. It could also be a puncture by nail or something. Once you've checked your tire pressures and set them all to desired pressure (30psi - depending on tire model and passenger occupancy) you can reset this alarm by pressing and holding down the button (apprx. 10 sec) located on the front of base of the emergency brake (same symbol on button as alarm). Blinking yellow light will stop blinking and stay on (this is when you can stop pressing the button), but eventually, shortly dissappear. I think the alarm is triggered by a difference of 4-6 psi which can aso be affected by climate change (warmer to colder season or visa versa).
I would suggest an ignition module. If it is a rough idle at startup I would check the throttle position sensor. You can check that by starting the car and unplugging the TPS. If the car runs differently then chances are it is working fine.
Open your hood, it is located on the passenger side corner up against the fire wall. It is yellow pull the cap off bend a papper clip in a u shap. put it in turn key on but dont start car. there is a little flap in your captet on the passenger floor. the little red light will flash long and short blinks. then convert the code
if that "Circle" is a sort of round-bent arrow shape around "!" mark, you either have ASC or DSC disabled manually (by pressing the "DSC" button on your console", or there is a problem with the system.
Take your to the dealer. Specialized MINI/BMW computer should be able to diagnose it right away.
Can be a costly repair
Finding out what the code number is, is the first step.
You can find this easily by watching the blinking yellow check engine light and counting the number of flashes for each of the numbers in the 4 digit fault code.
To do this without a code reader; sit in the car and turn the ignition on (do not start the car) and after 3 seconds push the accelerator pedal all the way down to the floor and release fully (pull your floor mat out from under the gas pedal). After the 3 seconds, do this 5 times quickly, in less than 5 seconds. Then hold the accelerator pedal down for exactly 7 seconds and release it fully. Then within 10 seconds, the yellow check engine light will begin to blink.
The numbers of blinks will go from 1 to 10. A 10 will represent a "0".
For example; 0303 would be 1st number is 10 flashes, short pause then 3 flashes, short pause then 10 flashes, short pause and 3 flashes. It will repeat this again if there is only one fault code. There could be other fault codes and you would count those in the same way.
The 0303 code means that you have a cylinder misfire in the #3 cylinder. This could be a fouled plug, poor connection between the plug and the coil or something else.
To erase the code hold the gas pedal down while the yellow light is blinking for about 15 seconds then turn off the ingnition. Code will now be reset and light will go out.
If for some reason you do not get the yellow light to start blinking, tturn off the ignition and try it again. You may wish to get a watch with a second hand as the time is critical as to the seconds between steps.
After you find out what codes you have, send back an email and we can document the actual codes and the problems you are having.
PROCEDURE When the Check Engine warning light has been reported on, turn the ignition on, pull down the passenger's side carpet from under the dashboard and observe the LED on the top of the ECU. The LED indicates a system failure code by blinking frequency. The ECU LED can indicate any number of simultaneous component problems by blinking separate codes, one after another. Problem codes 1 through 9 are indicated by individual short blinks. Problem codes 10 through 43 are indicated by a series of long and short blinks. One long blink equals 10 short blinks. Add the long and short blinks together to determine the problem code.