And to pile on, I honestly believe that a lot of places want to replace all of the EIS modules whenever one part has failed. Not necessary, as the replacement can be coded, locally or remotely. However, I do know of some dealers that won’t do it for anyone. Others do it for independent shops for a fee.
-D > On Sep 28, 2023, at 2:43 PM, Floyd Thursby via Mercedes > <mercedes@okiebenz.com> wrote: > > Exactly. If it needs new keys that tells me the keys are bad and maybe the > EIS is not working, but a new key should be programmable to match the > existing keys and the rest of the car. The lock module gets told by the EIS > to unlock, and for the ECU to start the engine. So now I am wondering if > there is a bad key(s) (which wouldn't be likely for both to be bad) or just > the EIS is not recognizing the existing keys. > > " The key turns all the way in the ignition but there is zero response, no > clicks or sounds. "--> so this says that the key WILL turn so somehow the EIS > is recognizing it to allow it to turn, so the key is actually good and the > EIS is good. If either is bad then they key won't turn in the slot. Does > the instrument cluster come alive when the key is turned? If the car is not > coming alive, but the key will physically turn (and here I'm assuming it is a > slot on the dash and the key is a fob), then I'm thinking a SAM or CANBUS > error or power issue is preventing the EIS from talking to everything else. > I had a similar problem on the CL500 when the power cable under the passenger > front floor was loose, the IC was dead as were windows, but the engine would > start and steering worked etc. > > First I would dig into the whole thing with DAS/Xentry and see which nanny is > actually unhappy and if there are any CANBUS errors or events. Or bad power > at the modules in question, which would point to a relay or fuse driving the > circuits. Maybe they did that and decided their recommended fix was best > (for them, not necessarily for the owner, and maybe they are just lazy or > ignorant). > > Then check a good key, just pay for a third key programmed to the car, looks > like $235, that's quick and easy and in any case you would have a new key. > (But here if the key is turning, I am thinking the key is good) If that > doesn't start it then put in an EIS and program it to the car and do a key > match with it (this can be done in Xentry easily in about 5min) and see if > that works. Labor on that should be maybe 1hr. (And again, if the key > physically turns that suggest the EIS is OK?) And if that doesn't work and > the lock module is still bad then I would think that it was the culprit all > along. This would be the best strategy given parts + labor on each step, the > lock module is going to be the killer with the labor. But someone adept with > Xentry should be able to figure out exactly what the issue is and not shotgun > $3k worth of parts and labor at it. I have a hard time thinking that keys > EIS and lock module all went bad at once, esp since the key will physically > turn. > > --FT > > On 9/28/23 2:08 PM, mitch--- via Mercedes wrote: >> On 2023-09-28 13:36, Floyd Thursby via Mercedes wrote: >>> So this makes me wonder what exactly might be wrong with it. >> >> I look at the quote and think: Is it the ignition lock or the module that's >> bad? >> And are you charging me for both because you don't want to strand me when >> the second one fails, or are you charging me for both because you don't know >> what failed? >> >> _______________________________________ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> > -- > --FT > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
