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Old 06-16-2004, 01:55 PM
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Join Date: Aug 2003
Posts: 40
Snap-On MT2500 scanner function

Originally, I had been researching the purchase of one of the many OBD-II scan tool options. However, the opportunity to acquire a used MT2500 at a reasonable price may soon present itself. I would still need to get a software cartridge for use on the ML.

After reading available Snap-On material, it is unclear whether or not the MT2500 system can, in addition to all its diagnostic capability, fully access the AAM (All Activity Module) on a '99 ML.

Also, OBD-II READ function is mentioned in the literature but I'm having to assume that the RESET function is included. Trust I'm not being naive.

Any clarification around these two issues (AAM access and OBD-II reset function) would be much appreciated before I make the investment.

I am aware that the system has considerably more diagnostic function than needed most of the time. However, it would be helpful to have diagnostic detail concerning problems whether I was to tackle them myself or have the local shop involved (the older I get, the easier I find it justifying the purchase of "toys").

Thanks in advance for any offered clarification.

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Old 06-17-2004, 02:02 AM
Registered User
Join Date: Sep 2002
Posts: 302
We had a snapon diagnostic

I believe the cost for the star diagnostics? (computer that can hooks up to your ML to activate certain settings) costs like $10,000... Not worth the money, u're better off to bring it back to the dealer for AAM settings (rarely needed to be done), as for the OBD2 you better just get a obd2 cable + software that hooks up to your laptop cost is around $150, that can reset your check engine light (unplugging your battery works too to reset) and test your vehicles problems.. I used my shops snap on versus the laptop w/ obd2 cable and the laptop was far more superior as it provided me with graphs, full details on the error where as the Snapon only has 3 lines of led text (difficult to read and to buy the graph option is another $3K..)
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Old 06-18-2004, 12:57 PM
Registered User
Join Date: Mar 2004
Location: longview, texas
Posts: 41
my $0.02 worth:
i THINK the snap-on will read chassis codes too, which the generic obd ii units dont (engine and powertrain only). i have a buddy who is the snap on distributor for this area, but i never get 'deals' from him. wish i lived closer to you and might offer to split the cost of the snap on unit.
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