You missed my complaint completely over all of these forums. I have never once complained about not being able to fix computer-controlled cars. That's one of the main subjects I teach, and I've had very good results with students whose preferred learning style is hands-on with things they can see and touch, vs. Students who learn best by visualizing in their heads. Those are the people who are typically good at understanding electrical. I too have seen people wash out of the industry because they didn't keep up with technology, but my complaint isn't that technology; it's the COST of repairing something when it breaks. That's where I get frustrated. It's also the inappropriate use of technology that needlessly makes something more complicated than it has to be. Ever heard of "KISS"? "Keep it simple, stupid". Why do we need a Body Computer to run a delayed rear wiper? Anyone who has owned a '96 or newer Caravan has had it replaced for front wipers that don't work. Those wipers don't do anything that delayed wipers haven't done for 40 years, so why do they need a computer now? Tell the customer the benefit of that computer when you hand them the bill.
Did you know that cars have had electric horns for a really long time? I can understand adding on a remote keyless entry system for people who like that kind of stuff, but explain to me why Ford sees fit to use the horn switch to send a voltage to the most "intelligent" computer on the car, the instrument cluster, which interprets that signal, then sends a digital signal on the buss to the "FEM" (front electronic module), which interprets that signal, then turns on the horn relay. Explain to your customer why it's going to cost $800.00 to fix their dead horn. If that kind of use of technology really benefits the owner, why don't they involve three or four computers in blowing the horn?
I wouldn't even complain if these computers were as reliable as the old tank I'm typing on right now. I built it 12 years ago and have never had a problem, but look at the environment where computers live in cars. Road salt, rain, ice, summer heat. Wrenchtech is warning about electrical problems on old cars. How can you possibly expect newer cars to be more reliable when they have so much more wiring and connectors? It's a testament to the engineers that we don't see a lot more corroded connectors and splices but putting more of them on the car isn't going to make them less of a problem.
If you want appropriate use of technology, look at smart air bags, anti-lock brakes, lighter yet more rigid suspension systems, comfortable seats, computer-controlled ignition and fuel injection that makes the exhaust so clean you can put your mouth on the tail pipe and live to tell about it. But, ... When a car manufacturer tells a customer they can not go to a salvage yard to buy a replacement computer; that the only way to fix their car is by buying a new computer from them, AND, the software has to be installed at the dealer, I see red, and I'll warn people about that every chance I get. That doesn't mean I can't fix it. It means I don't want to pay for it. If you still choose to buy from that manufacturer, more power to you, but is it asking too much to go into the transaction prepared with some information? Why keep those details secret? How many Volkswagens get towed to the dealer to have computers unlocked because someone tried to replace their own battery?
GM had Theft Lok on their radios in the '90s that caused some problems for owners, but they had the choice to not activate it. Owners aren't given the choice anymore.
Chrysler decided a $15.00 backup light switch on the transmission that worked fine since the 60s was no longer acceptable. The switch is still on the transmission, but now it grounds a 5.0 volt signal to tell the Integrated Power Module to turn on a transistorized switching circuit to send current to the backup lights. Appropriate use of technology? When a friend's '06 truck had no backup lights, he needed a $750.00 computer, then he spent weeks arguing the new computer was defective. He wasn't allowed to return it because it had been plugged in! What a scam. I convinced him it really was a computer problem so he ordered a second one, and that fixed the problem. $1500.00 to fix the backup lights. Explain to him the benefit of that computer. In order to pass inspection, I built a circuit with one relay that used the original switch, and it worked fine. If it wouldn't have been for the 4wd lights that also didn't work, he wouldn't have even replaced that computer.
Now with all the computer reflashes, the manufacturers have found even more ways to suck money from unsuspecting owners. It makes perfect sense to have fewer computers in inventory, then install software tailored to that specific vehicle, but some manufacturers have added another layer of greed to the process, and THAT is where my anger comes from. Hyundai is the only manufacturer I'm aware of that allows anyone free access to their web site, and all the downloads are free. Thank you, Hyundai. Chrysler and Toyota allow anyone to flash their computers, except the Security system, for a subscription to their web site and $40.00 per download. Still reasonable, and any independent shop can do the work. There's only a few manufacturers who tie everything up and refuse to let other shops have access to the information except for three computers as mandated by the government because they directly affect emissions. Wrenchtech knows very well one of the manufacturers I'm referring to. Business practices like that only prove that the manufacturer puts profits ahead of their customers, and I choose to not do business with companies like that.
And I AM familiar with those 6,000 cars you're talking about that were only sold in California. Leased actually. We all heard the story way up here in Wisconsin about the multitude of owners who loved those cars and didn't want to give them up. Some people even tried hiding them and claimed they were stolen. With such huge public interest, wouldn't the smart thing be to ramp up production and service shops? Instead they decided it would cost too much to build the infrastructure to keep the cars on the road. I don't know much about those cars but it was obvious they had a product people wanted, so they cancelled production and crushed the cars already out there. Apparently they weren't smart enough to think about that infrastructure before they decided to lease the cars they did have. If they didn't want to support 6,000 wildly popular cars, what would it take TO want to support a product?
Just had a visit today from a former student who has been working at a Ford dealership. He is laughing at the electronics in their new cars. Some techies like the entertainment value, most customers tolerate it, but a lot of people run from those cars with all the distractions. Cars have already had reading lamps for drivers as well as passengers, (mine don't need a computer to turn on), but how long will it be before they start putting recliners in for drivers? If you have to be entertained, do it at home, not while driving. Well, okay, ... I like a nice tune now and then, but not when the distraction makes me a safety hazard.
If a car really needs a computer to do something that can't be done without one, fine; use a computer, but allow me to buy a used one without having to go to the dealer, and there's no reason a new one should cost twice as much as a new laptop computer. New mothe rboards cost around $100.00 and do a lot more than any car computer, but print a car manufacturer's name on it and the price quadruples because they know they have a captive audience.
I will admit that newer cars aren't found broken down on the side of the road anymore, but when I do come upon one, I personally get frustrated from not knowing what's wrong or being able to find out. I have many scanners and tools but I don't carry anything with me on short trips. What's the point? Even if I did diagnose something on the side of the road, I'm not going to have the parts to fix it. Ya gotta call the tow truck anyhow. Perhaps that's what you read when I said I can't fix something.
Build me a simple car that doesn't cost more to fix than the monthly loan payment and I'll consider owning it. Allow me to choose between new and used parts when I need one and I'll be grateful. And if that car costs less than the lunar lander that landed men on the moon, I would expect that it wouldn't have more computer technology than that lander had. Put common sense back into at least one model and I'll buy regardless who builds it.
Sunday, April 8th, 2012 AT 8:48 AM