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Mercedes Benz
Code Scanner CS1000 OB15-11
17
Check Engine Light Diagnosis
Mercedes S(140), SL(129), E(210) and C(202) class have multiple systems which can turn on an Check Engine
Light. All related systems must be tested for codes and repaired before the light will extinguish.
129 LH LH (pin 4 & 5) EA/CC/ISC (pin 7), BM (pin 8), DI (pin 17 & 18) and DM (pin 19)
140 LH LH (pin 4) EA/CC/ISC (pin 7), BM (pin 8), DI (pin 17) and DM (pin 19)
124 HFM HFM (pin 8) EA/CC/ISC (pin 14), and DM (pin 3)
140 HFM HFM (pin 4) EA/CC/ISC (pin 7), BM (pin 8), DI (pin 17) and DM (pin 19)
202 HFM HFM (pin 4) EA/CC/ISC (pin 7) (except C220) and DM (pin 19)
210 HFM HFM (pin 4) EA/CC/ISC (pin 7), BM (pin 8), DI (pin 17) and DM (pin 19)
6. Clearing Fault Codes
After repairs have been carried out reread the codes. After rereading the codes press the CLEAR key to erase
all of the fault codes from the control unit memory. When there are no faults in the system, either
1
(Impulse or analog systems) or 2 (digital systems) will be displayed on the screen.
CLEAR
7. Return to System Select Function
Press the SYSTEM key to scroll through the system selections.
SYSTEM