need expert's advise

[b4sunset]

Daer all
Thank u for dropping by my post
I have one question to the subscriberes and another one for the blog's supervisor;
As for respected subscribers , can you please let me know ur opinion in this software and hardware ? I like cars but this is it, I don't have any technical background and I really would like to be involved in taking care of my 2003 vehicle ML55 , does any one has similar model & managed to try this dashcomand product? Is it doable for average person to anlyze the problem and fix his/her car by selfmean?
If this is possible, thin I will buy the software and hardware because every visit to workshop cost me afurtun!!

Regarding the question for the supervisor of this forum , as I mentioned my car is ML55 2003 and my phone is IP4 , which of your product would be compatable with my SUV & mobile, that I need to buy from ur products range?

Sorry for the prolonging, hope to get the help that I am seeking for.

All the best to every one.

Rami

[InMrFixIt]

After thirty years of experience working on many different automotive and machine tools the electronics has always been very challenging.  If you do not have any mechanical back ground I recommend taking some classes at the local vocational technical school.  There courses are geared too beginners to work into taking the automotive exams.  I was lucky to have a scientist for a father who was an investigator for Military Intelligence.  Good training before I went to college and studied Electrical Engineering.  My newest challenge is working on some of the newer farm equipment.  Seems some models are being engineered using reversed logic.  Pressure Switches for Air conditioning use to be normally closed when within normal operating range.  Opening these circuits would shut off the Compressor.  These switches are even shown normally closed in the wiring diagrams on the newer units, but run through a control module.  Know when these contacts close the AC warning light goes on and the control module turns off the compressor.  Unplugging these pressure switches makes it possible to turn the compressor back on, but if a wire brakes, the same problem could happen.  Improper pressure would never turn on the warning light or shut off a signal to the control module.  Sorry, this could be problem; I hope these errors can be corrected before any major problem.  Safety Switches should be like dead man switches.  The circuit should always be closed for safe operation of any device.  What are real nice are the pressure transducers.  The only problem with these transducers is you have to poke holes in the wires with stick pins to crate test points.  It is best to keep some finger nail polish handy, so you can paint over the holes (on equipment you do not have diagnostic software for).  Of course some newer farm equipment has test circuits for connecting computers too.  The only problem with all the farm equipment is there are no OBD-2 regulations on farm equipment.  I just spent 10 hours testing all the circuits on a 10 year old combine.  I finally determined all the external components were ok, there was no power feeding the AC clutch.  I swapped out the control box (logic circuits with e-prom chip) with another combine, and the compressor then worked.  There is a problem here too as if there is a faulty feedback circuit, and you miss a over voltage problem on a control wire, damage could burn up a controller.  There are no shortcuts, as you cannot just add a jumper wire anywhere.