parkrog - 2/23/2006 7:17 PM
As far as I know the Mercedes 1998-1999 ML320 are the only on car on market with a 8 key limit.
That is not correct. All W163â€™s have an 8-key limit. In fact, any MBZ that uses the switch-blade key has an 8-key limit. This would include pretty much all the early to mid 1990â€™s models as well as the R170 SLK, and the R129 SL. The only MBZ models that use the DAS system that have a greater limit are the ones suing the infrared SmartKey. They have a 24-key limit.
Keys die without any reason and this design is a defect that MB fixed in 2000.
First of all, keys donâ€™t die â€œwithout any reasonâ€?. There will be â€œsomeâ€? reason, either a defect in the key itself or a defect in the vehicleâ€™s system that reads and rewrites the keyâ€™s data. Secondly, this was not fixed in 2000. There were no changes to the system itself other than to make the DAS module separate from the AAM so that if it failed or if the user lost all keys, DAS could be replaced independently of the AAM thus saving some costs. This did not solve any problems that could occur to make a key fail.
Probably my AAM is defective and keys were replaced in warranty period. MB insists on most costly fix of replacing everything ($3600.00) and no one else has codes and data to do work.
Somewhere in the world, there is someone with the knowledge and equipment to fix your AAM and keys so they will work again. The problem is that getting to that person and equipment is likely more expensive than paying the dealer $3600 to do the repair.
MB issued a service advisory in 2000 and had a repair kit to fix problem but its no longer available and won't work if all 8 keys used.
Actually, there were two TSBâ€™s addressing DAS problems. On had to do with a faulty immobilizer circuit in the ECM, and that really has nothing to do youâ€™re your problem. The other called for replacing the AAM and all keys, just like you are having done.
Just received a email from a owner who's car died while driving on cruise control at highway speed!
Towed to dealer who replaced the key! Towing and key cost over $500.00.
How many time and thousands of dollars in towing and keys charges have owners had to pay for a bad and defective design.
This would appear to have been the immobilizer problem and not a DAS or key failure. Iâ€™m not sure why they would replace the key, but maybe itâ€™s just a precaution?
Anyhow, I do support your complaints, but you need to make sure you are complaining with correct information so people will believe you.