Thursday, 9 April 2015

E87 LCI: 1er Warning-light woes + dodgy pad-sensor. [How to reset.]

My boss Mike has been dying to get back on the Beemer wagon, so has surreptitiously gifted himself by getting his wife an E87 LCI 118d M-sport as a present. It was time to reset the service lights, which can be done using the 'trip reset' button on the clocks, like other modern BMWs, though with no iDrive the procedure is slightly different.


HOW TO RESET SERVICE DURATIONS:
  1. Turn ignition on without depressing the clutch. [Key phase 2 on push-button models].
  2. Hold the trip-reset [odometer] button on the clocks until a yellow triangle with ! appears.
  3. Single presses of the trip-reset button will now cycle through the service menu options [service, oil, brake-pads etc.]. Stop at the one you want to reset.
  4. Hold the BC button on the end of the left indicator-stalk until a clock appears next to the menu-icon on the dash. When the clock stops counting the service duration for that option is reset.
  • A red icon is a service duration warning. An orange icon means it is overdue / there is a fault.
  • A red/orange icon of the car in the air with a stand under it means there is a fault and it needs to go in to BMW [or get a scanner on it].
  • If the handbrake light stays lit up after you release the handbrake then this means there is a fault in the brake system. If you know the discs/pads to be OK and the brakes are fine, then you have a dodgy pad-wear sensor.

PAD-WEAR SESNOR ERROR: [HANDBRAKE-LIGHT]

After resetting the brake-pad service indicator we noticed the mileage count had not reset. The icon in the service menu recommending the car be taken to a dealership [the car icon with a stand underneath] and interestingly, the handbrake light was staying on even with the handbrake released. After a bit of forum scanning it turns out the light staying on means there is a fault in the braking system or one is about to develop. This is common when pads / discs have been changed and 9-out-of-10 times it means a pad-wear sensor has been disturbed and thrown up a fault. If you know the brakes are working as they should then the warning message can be cleared with a scanner and probably wont return. If it does then a pad-wear sensor has failed [scanner will likely confirm this] and will need replacing. You can do both of them for about £10 and it's a really easy job - wheel off, 2 bolts and a push-fit - but if you're truly skint I believe there is a technique online somewhere to just twist some wires together and bypass them.


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