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Jeep
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2025
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Grand Cherokee Summit
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Repair and Diagnosis
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Engine Performance
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System
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3.6L - DTCS U0103 To U0164
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DTC Troubleshooting
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U0129 Lost Communication With Brake System Control Module 1
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Default Action
Default Action
The MIL will illuminate.
ESS System is disabled.
Anti-lock Brake System (ABS) indicator lamp illuminated.
Electronic Stability Control (ESC) indicator lamp illuminated.
ABS System is disabled.
ESC System is disabled.