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Old 12-03-2003, 07:38 PM
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JimF JimF is offline
'94 S500: only 793 sold!
Join Date: Mar 2001
Location: San Diego, CA
Posts: 1,925
DTC 26 for the Diag Module . . .

is "Upshift delay faulty". That probably means that a vacuum line is broken someplace in that chain.

When you reset the DTC by holding the button down for 10 secs, the LED may not flash any 'blinks' until the system 'resinks' itself. So that's not unusual.
Regards . . . . JimF
'94 S500 Cpe

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