Professional Tesla HV battery repair and replacement services
When your Tesla shows an HV battery issue, the first thing you might hear from an official Tesla service center is that your entire battery pack has failed and needs a full replacement. The cost? Usually between $15,000 and $25,000, depending on your model and year. But is a full replacement really necessary? Often, the answer is no. Many Tesla HV battery problems can be repaired — saving you thousands. Let’s break down the common issues and what can actually be fixed.
HV battery brick imbalance
Tesla Large Drive Units are known for their durable design, enabling them to operate at high loads for many years and cover hundreds of thousands of miles. However, there is one design flaw identified by engineers: the cooling system, specifically the main rotor seal. Over time, this seal can wear out and start leaking coolant into the motor.
The ceramic rotor bearings typically suffer first; the coolant washes out the lubricant, causing the bearings to produce a whistling sound that increases during acceleration. This sound is easily distinguishable from the normal motor noise, indicating that your drive unit requires service.
In later stages, coolant can ingress into the Stator, causing insulation issues, potentially resulting in a short circuit. In this case, you may see warning messages on your Tesla screen indicating reduced external insulation, decreased power, and that the vehicle may not restart. You will notice a reduction in both power and speed.
**Attention!** If this situation has already occurred, we strongly advise against continuing to drive the car, as it is critical. The vehicle may shut down while driving, posing a serious safety risk.
The ceramic rotor bearings typically suffer first; the coolant washes out the lubricant, causing the bearings to produce a whistling sound that increases during acceleration. This sound is easily distinguishable from the normal motor noise, indicating that your drive unit requires service.
In later stages, coolant can ingress into the Stator, causing insulation issues, potentially resulting in a short circuit. In this case, you may see warning messages on your Tesla screen indicating reduced external insulation, decreased power, and that the vehicle may not restart. You will notice a reduction in both power and speed.
**Attention!** If this situation has already occurred, we strongly advise against continuing to drive the car, as it is critical. The vehicle may shut down while driving, posing a serious safety risk.
HV battery internal insulation resistance drop
Tesla Large Drive Units are known for their durable design, enabling them to operate at high loads for many years and cover hundreds of thousands of miles. However, there is one design flaw identified by engineers: the cooling system, specifically the main rotor seal. Over time, this seal can wear out and start leaking coolant into the motor.
The ceramic rotor bearings typically suffer first; the coolant washes out the lubricant, causing the bearings to produce a whistling sound that increases during acceleration. This sound is easily distinguishable from the normal motor noise, indicating that your drive unit requires service.
In later stages, coolant can ingress into the Stator, causing insulation issues, potentially resulting in a short circuit. In this case, you may see warning messages on your Tesla screen indicating reduced external insulation, decreased power, and that the vehicle may not restart. You will notice a reduction in both power and speed.
**Attention!** If this situation has already occurred, we strongly advise against continuing to drive the car, as it is critical. The vehicle may shut down while driving, posing a serious safety risk.
The ceramic rotor bearings typically suffer first; the coolant washes out the lubricant, causing the bearings to produce a whistling sound that increases during acceleration. This sound is easily distinguishable from the normal motor noise, indicating that your drive unit requires service.
In later stages, coolant can ingress into the Stator, causing insulation issues, potentially resulting in a short circuit. In this case, you may see warning messages on your Tesla screen indicating reduced external insulation, decreased power, and that the vehicle may not restart. You will notice a reduction in both power and speed.
**Attention!** If this situation has already occurred, we strongly advise against continuing to drive the car, as it is critical. The vehicle may shut down while driving, posing a serious safety risk.
HV battery contactors failed
Tesla Large Drive Units are known for their durable design, enabling them to operate at high loads for many years and cover hundreds of thousands of miles. However, there is one design flaw identified by engineers: the cooling system, specifically the main rotor seal. Over time, this seal can wear out and start leaking coolant into the motor.
The ceramic rotor bearings typically suffer first; the coolant washes out the lubricant, causing the bearings to produce a whistling sound that increases during acceleration. This sound is easily distinguishable from the normal motor noise, indicating that your drive unit requires service.
In later stages, coolant can ingress into the Stator, causing insulation issues, potentially resulting in a short circuit. In this case, you may see warning messages on your Tesla screen indicating reduced external insulation, decreased power, and that the vehicle may not restart. You will notice a reduction in both power and speed.
**Attention!** If this situation has already occurred, we strongly advise against continuing to drive the car, as it is critical. The vehicle may shut down while driving, posing a serious safety risk.
The ceramic rotor bearings typically suffer first; the coolant washes out the lubricant, causing the bearings to produce a whistling sound that increases during acceleration. This sound is easily distinguishable from the normal motor noise, indicating that your drive unit requires service.
In later stages, coolant can ingress into the Stator, causing insulation issues, potentially resulting in a short circuit. In this case, you may see warning messages on your Tesla screen indicating reduced external insulation, decreased power, and that the vehicle may not restart. You will notice a reduction in both power and speed.
**Attention!** If this situation has already occurred, we strongly advise against continuing to drive the car, as it is critical. The vehicle may shut down while driving, posing a serious safety risk.