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2021
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ES 300h Luxury
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Repair and Diagnosis
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Brakes
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Mechanical - Hydraulic
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Electronically Controlled Brake System (Hybrid) - Diagnostic Codes (1 Of 5)
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ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model)
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DTC C1203: ECM Communication Circuit [06/2018 - ]
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Typical Enabling Conditions
Typical Enabling Conditions
Monitor runs whenever the following DTCs are not stored
None
All of the following conditions are met
-
EEPROM read-in
Complete
IG1
On
Vehicle speed
40 km/h (25 mph) or more