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#1
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"M" button on auto tran
I 've only had this 1998 318 ti for a few days. It has a 4-speed
automatic but next to the shifter is an "A-M" selector switch. The owner's manual says pushing "M" keeps the transmission in the selected gear regardless of speed. OK. But can you row through the gears like with a manual trans without damage? If it is really a manual transmission without a clutch, I would like to know! Thanks, Fritz Wagner |
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#2
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It will let you shift but only within certain parameters. That is, it won't
let you downshift if doing so will result in an over-rev. Also, it will upshift for you if you don't to prevent over-rev. Steve |
#3
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Thanks, Steve!
Short and clear. Much appreciated. Fritz Wagner On Sun, 20 Feb 2005 20:57:41 GMT, wrote: >It will let you shift but only within certain parameters. That is, it won't >let you downshift if doing so will result in an over-rev. Also, it will >upshift for you if you don't to prevent over-rev. > >Steve Columbus, Ohio |
#4
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Auto and Manual shifting.
With the button in the A mode, the trans will shift when it thinks the time is right. With the button in the M mode, the trans will hold a gear until you decide it is time to let go. You asked about damage. In theory there should be no damage by using the M mode, but if one has to ask about the switch, then one might not be well versed in when it might be a good time to shift, or not shift as the case may be, and in that event there could be significant damage. This sort of damage is more a function of operator error than using the button. > wrote in message ... > I 've only had this 1998 318 ti for a few days. It has a 4-speed > automatic but next to the shifter is an "A-M" selector switch. The > owner's manual says pushing "M" keeps the transmission > in the selected gear regardless of speed. OK. But can > you row through the gears like with a manual trans without > damage? If it is really a manual transmission without a > clutch, I would like to know! > > Thanks, > > Fritz Wagner > |
#5
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In article >,
Jeff Strickland > wrote: > With the button in the A mode, the trans will shift when it thinks the > time is right. With the button in the M mode, the trans will hold a gear > until you decide it is time to let go. > You asked about damage. In theory there should be no damage by using the > M mode, but if one has to ask about the switch, then one might not be > well versed in when it might be a good time to shift, or not shift as > the case may be, and in that event there could be significant damage. > This sort of damage is more a function of operator error than using the > button. We don't get this transmission in the UK, but it sounds like it takes control if you try and exceed engine/road speed that the maker has determined - like a Steptronic. Many older transmissions had no override *at all* - so similar to a manual box. On those transmissions, the thing to avoid was starting in a high gear using full power - it could be quite easy to overheat the transmission. -- *Why do overlook and oversee mean opposite things? Dave Plowman London SW To e-mail, change noise into sound. |
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