I completely agree! It was a real insult to try to charge 3 times the price of a new unit, especially when that unit would normally cost around $30 for a regular car instead of the Lambo taxed $1200.It really is frustrating that someone would try to pull this. I’ve spent literally hours looking over the electrical prints to help out others on the forum. As well as myself in case my alarm fails. The whole point of these forums is to help and educate each other on these cars. Not to try to turn a hefty profit. My rant is over lol...
False, if you have the PIN card, you can program the new Med to the existing fuel valves. Many do have the PIN card.You cannot just get a new MED, it has a code that is synchronized with the fuel solenoids, they also need to be replaced.
Thanks for the lead from my other thread - I'll cross link for others. Though mine is an LP640 so may be different.I may go to a local electronics shop and ask them to replace those 2 capacitors to see if it fixes my old unit, just out of curiosity. I think there's a good chance that's what will fix it since the type of capacitors on the MED board are notorious for going bad with age, and the unit runs 24x7 when the battery is plugged in.
Replacing caps is a good idea. However, if the caps have already blown, there’s a high probably that other elements have been damaged(any ASIC/TTL chips, etc). However, since those caps are super cheap, it’s the best first step to fix/triage any issues and a great preventive maintenance measure.Hello, very interesting and useful information here...thank you all for posting your feedback on this subject. I don't currently have any issues with my MED or fuel valves, but I don't have a PIN card for mine, so I should be prepared. I started out searching for less expensive options in obtaining additional key fobs and found this thread. I thought that I should offer my two cents (if worth that...lol) on this subject being that I've been in the technical field my entire career.
I do a lot of component level troubleshooting and reworking (de-soldering and soldering) of very complex server platforms to simple I/O devices using a verity of test equipment for the past 33 years. With that said, from the photos of the MED PCB I've seen on this thread, it looks to be a fairly simple system to debug/repair if it's failing or has failed. Replacing electrolytic caps in systems older than 10 years would be a good place to start; most generally only have a 5 to 7 year life span at their rated values. It's a cheap and easy way that can probably resolve 25%-40% of the MED failures (I'm guessing). One wouldn't technically need to know how to do any real troubleshooting.
You can usually see (visually) when the electrolytic caps fail as the tops will start to bulge up. Ceramic caps do fail, but not very often; they generally have a much longer life span than electrolytic caps. I'm sure the MED unit can have other failures as well, but if the behavior is intermittent, I would check for cold solder joints and failed caps in the power rail circuit(s).
Someone had asked about obtaining the PIN card code between the MED and fuel cutoff valves, I'm sure that would possible by inserting a serial bus analyzer between the MED valve output and the cutoff valve(s), as long as MED was still functional enough for that communication for this testing. But, I think it's a much better idea to remove the cutoff valves all together, solenoids do fail and usually get extremely HOT when they do. I don't know the design of the solenoids used for the fuel cutoff valves, but I would be hesitant to design them in circuit near fuel. I do remember seeing a Murcielago that had caught fire which looked to have started in the same area where these valves are located...defiantly makes me wonder.
In any case, sorry for the long post...I hope that someone finds this somewhat useful.