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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSJEEP2011LIBERTY RENEGADE, AUTOMATICREPAIR AND DIAGNOSISTRANSMISSIONTRANSMISSION CONTROL SYSTEMS(TRANSMISSION CONTROL MODULE (TCM) - ELECTRICAL DIAGNOSTICS)DTC TROUBLESHOOTINGP1639-TCM INTERNAL-CAN 2 RAM PERFORMANCESET CONDITION
2011 Jeep Liberty Renegade, Automatic
Set Condition
2011 Jeep Liberty Renegade, AutomaticSECTION Set Condition
If the TCM detects an internal error with the controllers Random Access Memory (RAM) on the CAN controller 2 section of the microprocessor.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.