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1997 S500
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Discussion Starter #1
Climate Control Unit Specifics

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Having trouble with my AC and need to check what the proper version coding, the P1 and P2 values, should be on my push button unit. I have gotten info like this:

P1
C00 - new,not programmed
00 - Model 140 (as of MY 1997)
01 - Faren. degrees displayed (up to MY 97)
03 - Cel. degrees displayed (up to MY 97)
72 - Serial interface K1 and K2 programmed (as of MY 97)

P2 Engine version
01 - M 104 (up to MY97)
02 - M 119 (up to MY97)
03 - M 120 (up to MY97)
04 - OM 603 (up to MY97)

+8 to engine version --- blower motor speed on in AUTO mode
+ 128 to engine version ---- SMOG display readout switched off


My unit P/N is 140 830 2385. My P1 was set at 75??? My P2 was 125??? Am I being dumb? I believe my settings should be P1 72 and P2 130. Can any one shed some light on this? What are the common pairings of P1 and P2? I have seen common set ups for the 210 push button unit, but not for the 140.

One other note; I am continually getting an error code B1426 on the control unit and cannot find this trouble code listed in any form. Has anyone seen this?

Thanks for your time.
__________________
97 S500 W140
 
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