Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSJEEP2024GRAND CHEROKEE L LIMITED, RWDREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTHEADLIGHTSLEFT SMART LIGHTING MODULE (SLML) - DTCS B17EC-12 TO U300A-29
2024 Jeep Grand Cherokee L Limited, RWD
Left Smart Lighting Module (SLML) - DTCS B17EC-12 To U300A-29
2024 Jeep Grand Cherokee L Limited, RWDSECTION Left Smart Lighting Module (SLML) - DTCS B17EC-12 To U300A-29
- DTC Troubleshooting
- B17EC-12-Front Lighting Side Identification Circuit-Circuit Short To Battery
- B2199-16-Battery Voltage-Circuit Voltage Below Threshold
- B2199-17-Battery Voltage-Circuit Voltage Above Threshold
- B22A9-00-Ecu Internal Performance
- B22A9-44-Ecu Internal Performance - Data Memory Failure
- B22A9-45-Ecu Internal Performance - Program Memory Failure
- B22A9-46-Ecu Internal Performance - Calibration / Parameter Memory Failure
- B22A9-47-Ecu Internal Performance - Watchdog / Safety Failure
- B2808-12-Left Headlamp Cooling Fan Control-Circuit Short To Battery
- B2808-13-Left Headlamp Cooling Fan Control-Circuit Open
- B2808-19-Left Headlamp Cooling Fan Control-OVERCURRENT
- B2835-11-Left Headlamp Assembly Performance-Circuit Short To Ground
- B2835-12-Left Headlamp Assembly Performance-Circuit Short To Battery
- B2835-13-Left Headlamp Assembly Performance-Circuit Open
- U0140-00-Lost Communication With Body Control Module
- U0274-00-Lost Communication With Smart Lighting Module Right
- U0422-00-Implausible Data Received From Body Control Module
- U0575-00-Invalid Data Received From Smart Lighting Module Right
- U105F-88-High Speed FD-Can4 Communication Bus Performance-Bus Off
- U1060-83-High Speed FD-Can4 Communication Bus-Value Of Signal Protection Calculation Incorrect
- U300A-29-Ignition Switch-Signal Invalid
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.