My E39 was having a current leak and I was suspecting the entertainment system. I went to Optimum, Ah fu say they don't do these kind of diagnosis.So I was driving along Damansara Uptown, saw Brother Peter. Went in at 1pm, told him my car got current leak, suspect it's the entertainment system.He say no problem, they can diagnose. I went for a walk, got back to the shop at 3pm, a technician just started diagnose, he connected a light bulb to the battery. I asked him to start with the entertainment system first. Sure it is, there was a leak on the amplifier. His light bulb goes from a full bright light to a dimmer flashing light when he disconnect the amplifier. He say the light should be OFF, there are still other parts leaking. So he started to dismantle everything including the electronic board in front of the engine bay. My whole car was wripped open, and the light bulb is still showing flashing dim light.So I was a bit worry, and told him to stop. Ask him to just dismantle entertainment system for me. that was 4pm. But he told me for sure there is another leak. So he continue to dismantle all the electrical parts of the car. Until 7:30pm, when he dismantle the alarm system, the light was OFF. I say, the Alarm system may be normal to have some current, he agrees and put back all the car parts, lucklily he managed to install back everything with no problem.Then comes to paying time. Peter charged me RM450 for the labor. He say if I bring in to Auto Bavaria, they will charge me RM10,000 and it will be a few days of diagnosis. I told him it's bull shit, pay him the RM450 and walk away. His shop was empty the whole day, maybe we charge me labor for all his idle stuffs. Damn!