Hi, ive read loads of forums here and elsewhere but still cant get to do anything, my car is a rover 75 1.8 petrol year 2000 recently bought my problem is i changed the battery after that the airbag light came on, also I had to change the rear break discs and pads and abs light is on and also another one that means problems with breaks, ive tried all sorts of programs: scan XL digimoto elmmaster and loads more but nothing there is no signal data from the car, im using the usb grey box elm327, i read there where some people resoldering the unit but not sure if its the same as mine or if this unit is not compatible with my car although says 9141-2 I realy need help! also doing the whole service to the car so i would also like some tool for that anyone knows of a unit for me to buy from ebay? cheap nothing expensive like the t4?