Understanding the Range Rover Transmission Fault Error Messages
Experiencing a transmission fault error message in your Range Rover can be an alarming situation, often leading to confusion and concern. This issue can arise from a variety of underlying causes, making it challenging to pinpoint the exact problem. So, what exactly triggers the Range Rover transmission fault message?
Common culprits include a blown fuse, a dead auxiliary battery, or a malfunctioning main 12V battery. Addressing these concerns—by replacing the blown fuse or recharging/dead battery—can often resolve the issue. Additionally, examining OBD2 error codes can help identify the specific source of the problem. It is crucial to avoid driving your Range Rover while the transmission fault message is displayed to prevent potential safety hazards and further damage to the vehicle.
If you’re still uncertain about how to resolve the transmission fault error messages, continue reading this article for further insights.
How to Solve The Range Rover Transmission Fault Error
The transmission fault message may stem from three primary issues:
Reason 1: A Blown Fuse
A blown fuse can be a straightforward cause of the transmission fault message.
Diagnosis:
To determine if a blown fuse is the issue, follow these steps:
- Open the lower glove box compartment.
- Gently pinch the sides of the glove box to release it.
- Carefully remove the glove box from its compartment.
- Locate the array of fuses at the back of the compartment.
- Identify the second fuse from the left in the sixth row, which is typically numbered 57. Note that the numbering might be hard to see as it is molded. This fuse will also be the second red fuse in the row.
- Remove the fuse from the array.
- Inspect the fuse to see if it is blown. Compare it visually to a good fuse.
If you find that the fuse is indeed blown, this could be the reason for the transmission fault message.
Solution: Replace The Blown Fuse with A 10 A Fuse
To replace the blown fuse, adhere to these steps:
- Obtain a new 10 A fuse.
- Remove the blown fuse from the array.
- Insert the new fuse in place of the removed one.
- Reassemble the glove box back in its compartment.
- Start your vehicle.
Your transmission issue should now be resolved.
Reason 2: The Auxiliary Battery is Dead
A malfunctioning auxiliary battery can lead to problems with the transmission system.
Diagnosis:
To verify the condition of your auxiliary battery, follow these steps:
- Remove the plastic floor covering beneath the passenger seat.
- Take off the plastic panel under the glove box by using a plastic prybar to lift the tabs.
- Locate the auxiliary battery in the upper right corner; it will have a plastic blue cover and be rated at 12V 1.2A hr.
- Use a flathead screwdriver to remove the battery from its slot, carefully pulling out the battery with the terminal wires attached.
- Cut the heat shrink tubes covering the battery terminals with a utility knife.
- Measure the voltage using a multimeter across the battery terminals.
If the voltage reads 12V or below, the auxiliary battery is depleted and needs replacement to restore functionality to your Range Rover.
Solution:
To replace the auxiliary battery, follow these steps:
- Park your Range Rover securely; you may notice it lowering, which is normal.
- Acquire a new 12V 1.2A hr battery.
- Check the polarity of the terminals on the old battery.
- Disconnect the terminals from the depleted battery.
- Connect the terminals to the new battery, following the same polarity as before.
- Wrap the terminal connections with electrical tape to prevent shorts.
- Reinsert the battery into its designated slot.
- Reattach the plastic panel.
- Start your Range Rover.
With any luck, the transmission fault message should now be gone.
Reason 3: A Bad 12V Battery
A failing 12V battery can also trigger the transmission fault message.
Diagnostic:
To assess if your 12V battery is malfunctioning, consult the procedures outlined in this video. If you encounter a Range Rover charging system fault error, it is an additional sign of a dead battery.
Solution: Replace The 12V Battery
If your 12V battery is found to be faulty, replacement is essential. A new battery for Range Rover can range from $75 to $200. To proceed with the replacement, follow the instructions in this video:
This action should eliminate the transmission fault message. Additionally, if your Range Rover USB was previously malfunctioning, it should now work correctly.
How to Identify Range Rover Transmission Fault
To diagnose a Range Rover transmission fault error, utilizing a diagnostic tool is necessary. For guidance on connecting your Range Rover to a diagnostic tool, refer to this detailed video. The diagnostic tool will provide error codes related to the transmission fault messages. Below are some common error codes you may encounter:
- P0730: Incorrect Gear Ratio
Solution: Inspect electrical connections and wires to the transmission control module (TCM) for any damage or corrosion. - P0731: Gear 1 Incorrect Ratio
Solution: Add transmission fluid, replace defective shift solenoids, or reprogram the TCM. - P0732: Gear 2 Incorrect Ratio
Solution: Refill low transmission fluid, change dirty fluid, and replace faulty shift solenoids. - P0733: Gear 3 Incorrect Ratio
Solution: Replace shift solenoids, powertrain control module (PCM), or overhaul the transmission. - P0734: Gear 4 Incorrect Ratio
Solution: Inspect the transmission control circuit for wire damage and replace any faulty components. - P0735: Gear 5 Incorrect Ratio
Solution: Inspect and repair the TCM wiring, replace old transmission fluid, and check for faulty shift solenoids. - P0736: Reverse Incorrect Ratio
Solution: Replace transmission fluid and the transmission range switch; repair damaged wiring. - P0741: Torque Converter Clutch Solenoid Circuit Performance/Stuck Off
Solution: Replace the torque converter lockup solenoid and repair any damaged wiring. - P173E: Ignition Key Lock Solenoid Circuit Low
Solution: Check and repair wiring in the driver’s footwell and TCM.
This information should assist you in diagnosing and addressing your transmission fault error messages.
Should You Drive With A Range Rover Transmission Fault?
It is highly inadvisable to drive with a Range Rover transmission fault. The vehicle’s transmission may behave erratically, posing risks to your safety. Additionally, prolonged operation under these conditions can result in more severe damage, leading to costly repairs.
If you encounter a transmission fault error, it is essential to stop and rectify the issue or consult a professional mechanic.
How to Reduce Range Rover Transmission Faults
To minimize the risk of transmission faults in your Range Rover, consider implementing the following precautions:
- Regularly check the transmission fluid level.
- When off-roading or navigating low-traction surfaces, engage the center differential lock.
- Ensure the vehicle comes to a complete stop before shifting into reverse.
Frequently Asked Questions (FAQs)
What Happens When A Transmission Fails?
A transmission failure can result in partial or complete loss of functionality. The vehicle may refuse to move or may move very slowly. Gear shifting may become difficult or may not occur at all.
Is Transmission Failure Expensive?
Yes, addressing a transmission failure can be costly. Repairing a transmission often exceeds $300, and a full replacement can skyrocket to around $3500.
Should I Repair My Transmission?
Yes, repairing your transmission is advisable, provided the repair cost is between 40% to 60% of the vehicle’s total value. If repair costs exceed this range, it may be more economical to consider purchasing a new vehicle altogether, as transmission replacements can be financially burdensome.
Conclusion
Now you have a comprehensive understanding of Range Rover transmission faults. These vehicles can display transmission fault error messages for various reasons. Identifying the root cause and resolving it can be daunting, but this article aims to equip you with the knowledge needed to tackle these issues.
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