Here's a breakdown of potential causes and troubleshooting steps:
1. Vehicle Speed Sensor (VSS):
* Location: The VSS is typically located on the transmission itself. Its exact location varies slightly depending on the year and transmission type of your Sebring. Consult your vehicle's repair manual for the precise location.
* Testing: The sensor itself can be tested with a multimeter to check for proper voltage and resistance. A faulty sensor will often show incorrect readings or no output. You'll need to check your repair manual or online resources specific to your Sebring year and transmission type for the correct testing procedure.
* Replacement: Replacing the VSS is relatively straightforward, but requires some mechanical aptitude. Consult a repair manual for step-by-step instructions.
2. Wiring and Connections:
* Damaged Wiring: The wiring harness connecting the VSS to the TCM can be damaged, frayed, or corroded. Carefully inspect the wiring for any signs of damage.
* Loose Connections: Check all connections at the VSS and the TCM for tightness and corrosion. Clean any corroded connections with electrical contact cleaner.
3. Transmission Control Module (TCM):
* Faulty TCM: While less likely, a malfunctioning TCM can also cause this issue. A faulty TCM is harder to diagnose and often requires professional attention. It may need to be tested or reprogrammed by a mechanic or specialist.
4. Other Potential Issues (Less Likely):
* Low Transmission Fluid: Check your transmission fluid level. Low fluid can cause shifting problems.
* Internal Transmission Problems: While less likely given the speedometer issue, severe internal transmission problems *could* contribute. This would require a more thorough professional diagnosis.
Troubleshooting Steps:
1. Check Transmission Fluid: Make sure the transmission fluid level is correct and the fluid itself is clean and doesn't smell burnt.
2. Inspect VSS and Wiring: Carefully examine the VSS for damage and inspect the wiring harness leading to it.
3. Test VSS (if you have the tools and knowledge): Use a multimeter to test the VSS's output according to your vehicle's specifications.
4. Consult a Repair Manual: Obtain a repair manual specific to your Chrysler Sebring's year and model. This will provide detailed diagrams, specifications, and troubleshooting procedures.
5. Seek Professional Help: If you're not comfortable with automotive repair, take your vehicle to a qualified mechanic for diagnosis and repair. The issue could be relatively simple (VSS replacement), or more complex (TCM issue or internal transmission problem).
Important Note: Driving with a malfunctioning transmission can cause further damage. Minimize driving until the problem is diagnosed and repaired.
