Connect with us

News

Tesla Model S Drive Unit Replacement by the Numbers

Published

on

During my early days of researching the Tesla Model S, I had concerns about a number of things that were emerging in the press. Fires, Model S drive unit issues, and handling in the snow. Tesla quickly addressed the “firegate” issue by retrofitting the Model S with a titanium shield. My concerns around winter driving, in particular handling in the snow, also became a non-issue after watching several winter driving videos put together by Bjørn Nyland.

Within no time, I became a new Model S owner and quickly learned that driving in the winter could actually be quite fun with a good set of winter tires. Tesla later introduced the all-wheel drive “D” models putting to rest any remaining doubt that the Model S could be the best and safest handling car in the world.

But one question still remains for me, Has Tesla dealt with the Drive Unit issues?

Model S Drive Unit Replacement by the Numbers

There is a group of Model S owners across the forums, but also validated by major publications such as Edmunds, that have had one or more drive unit replacements.

Early reports of drive unit issues ranged from total failures that left the Model S inoperable, to more recent complaints of clunking and milling noises. Elon has said in the past that many of these pre-emptive drive unit replacements were unnecessary and a simple $0.50 shim was all that was really needed, yet Tesla Service centers have been proactively replacing drive units.

Advertisement

The following polls from TMC show that a majority of Model S owners have had their drive units replaced.

Drive Unit Poll

While the poll only represents a small sample of Model S owners, one might draw significance in the numbers as the density circles around owners needing a drive unit replacement at relatively low mileage, and without any harsh driving prior to failure.

The polls also give insight to the motive behind each drive unit replacement.

Non replaced DUs

DU replacements by build date

 

Though it appears the issues mainly center around earlier versions of the Model S, there’s been reports of newer Model S with Autopilot hardware hearing milling noises coming from the drive unit. One viewer described the sound as “sawing wood”.

Advertisement

 

 

 

Tesla’s Response to Drive Unit Issues

In typical Tesla fashion, the company acted fast to address the issues, and curb concerns by offering an unlimited mile/8 year warranty on the drive unit. I think this was a great response by Tesla which put to rest any concerns about the quality and long term durability of their drive units.

Elon is now talking about building a power train that will last a million miles and I believe Tesla continues to put significant energy into improving the drive units. Tesla continues to honor the warranty and is proactively replacing drive units that show early signs of problems.

Advertisement

Tesla-Drive-Unit

 

My Experience

After 12 months of Model S ownership and 30k miles drive, I started hearing a humming noise from the rear of my Model S during highway cruising. The noise was unusual as I had gotten used to hearing only the noise of the tires and wind, but there was a new noise only noticeable when cruising or decelerating with regeneration at 65 MPH and over. The noise continued to become more audible over the next few months, but I learned to live with it and did not contact Tesla. My personal rule of thumb on noise related issues is to wait for passengers to comment on it first. It’s my self crazy check.

Two months after the original drive unit humming noises began, a higher pitched milling type noise started occuring when traveling at speeds of 20 MPH or less. The sound varied depending on how much power was being used. That’s when I reached out to Tesla.

Drive unit details

Tesla service record

 

Tesla service had me come in for a test drive which they can do on demand without you needing to wait. We drove about a block before the Tesla service technician said the drive unit needed to be replaced.

The explanation was that tolerances inside the drive unit have led to metal particles getting into the fluid around the drive unit, and as the concentration of particles increased, it caused the noise from the drive unit to become louder when under load. The new drive units evidently have better tolerances and are less prone to having metal particles being shaved off.

Advertisement

At that time, Tesla service has been very backed up here in Massachusetts so my appointment for the drive unit replacement was scheduled six weeks out. I put on another 4,000 miles during that wait time, with an increasingly louder drive unit, before it was finally replaced.

When Tesla replaces a drive unit, they replace both the drive unit and inverter as you can see from a copy of the parts list. The last letter in the drive unit part number (“M” in my case) seems to indicate the generation of the drive unit. The later the letter the better, with the “Q”s seeming to have the best longevity according to the forums.

I’m happy to say that I’ve logged 8,000 miles of happy and noise-free driving after my drive unit replacement. The replacement was done recently so my guess is that I have a newer unit, and thus hope this will be my only replacement.

Thankfully for all of us, Tesla has a first class warranty and level of service. While it goes without saying that inconveniences such as this may happen, rest assured that Tesla has you covered and will always strive to make things right.

Advertisement

"Rob's passion is technology and gadgets. An engineer by profession and an executive and founder at several high tech startups Rob has a unique view on technology and some strong opinions. When he's not writing about Tesla

News

Here’s what changed in the Tesla Cybercab since last year’s unveiling

The latest sightings suggest that the fully autonomous two-seater is now moving closer to production.

Published

on

Credit: wudapig/Reddit

An apparent production-ready prototype of the Tesla Cybercab has been spotted testing in public, and it revealed several subtle but notable design updates compared to its 2024 prototype. 

The latest sightings suggest that the fully autonomous two-seater is now moving closer to production.

Subtle design refinements

The new photo of the Cybercab prototype was initially posted on the r/TeslaLounge subreddit, where it proceeded to receive numerous responses. As per the user who posted the image, the photo was taken in California, and the vehicle was reportedly fitted with a steering wheel. 

Based on the image, the Cybercab appears to have received a revised tail design, which now rises slightly, likely to improve aerodynamics. Tesla also appears to have shortened the rear body panel below the lighting section. Other updates include a slightly redesigned rear bumper, red reflectors repositioned farther from the wheel arches, and unpainted side repeater cameras that seemed to have been moved slightly forward, likely for better visibility.

The Cybercab’s B-pillar has also been shifted forward and now sits slightly lower, accompanied by larger door panels that likely make entry and exit easier. The vehicle’s tires are no longer painted either, nor do they have an extended wheel cover. Interestingly enough, the prototype was also fitted with side mirrors, though these are likely just for regulatory testing purposes and would be removed in the vehicle’s final production version.

Advertisement

An In-and-Out tease

At the end of October, the Tesla AI team teased some of the Cybercab’s progress with a lighthearted “Animal Style” Halloween post featuring the autonomous two-seater being driven through an In-N-Out drive-through by employees in costume. Longtime Tesla watchers noted that the In-and-Out photos continue a long-standing tradition of Tesla driving its prototypes through the fast food chain’s drive-throughs.

The In-and-Out photos of the Cybercab also revealed some updates that have been implemented on the vehicle’s front end. These included what appears to be segmented DRLs and headlamps, actual turn signals, and a splitter that’s a lot sharper. Some noted that the vehicle looks sharper than the prototypes from last year’s We, Robot event, but this also resulted in the Cybercab looking a bit less “Cyber” now.

Continue Reading

News

Tesla MultiPass in Europe expands, allowing ease of access to non-Tesla chargers

Published

on

Credit: TeslaCharging | X

The Tesla MultiPass program in Europe is expanding to new countries. The program was launched earlier this year to assist Tesla owners in having an easier charging experience at non-Tesla EV chargers.

In September, Tesla launched the MultiPass program to owners in the Netherlands, which aimed to enable charging for Tesla owners at third-party stations using the app or keycard. It was developed to avoid having to use multiple apps for each charging manufacturer.

Tesla launches MultiPass to simplify charging at non-Tesla stations

Both access and payment would be performed through the Tesla app, streamlining the entire process.

Today, Tesla expanded the program to Sweden, Germany, the United Kingdom, France, and Belgium, building on its initial rollout and partnering with companies like Fastned to improve EV roaming coverage across the continent.

The program is still in its early stages, and it appears to have some issues, which were highlighted by owners.

Some state that the different designs between chargers can create a bit of a hassle, especially as some do not properly display charging rates and inconsistent pricing displays.

Additionally, Tesla’s Trip Planner and other route planner integrations are not as descriptive as they should be, so some owners suggested reliability and visibility improvements.

Tesla partnered with Electrify America, Rivian’s Adventure Network, and other networks to expand charging availability and make options more readily available.

Tesla’s Supercharger presence in Europe has expanded quite a bit over the past few years, but EVs are much more prevalent there than they are here in the U.S. The company has done a great job of growing the Supercharger presence this year, and there are currently over 11,000 stalls on the continent.

This year, Tesla added 200 total stations and roughly 1,250 total stalls, a 16 percent increase from last year. Europe also has a high concentration of V4 Superchargers, as nearly 42 percent of the stalls on the continent are V4, giving higher charging rates of up to 500 kW.

Continue Reading

Cybertruck

Tesla announces delivery timeline for Cybertruck in new market

“Coming soon! Estimated deliveries in Q1 for UAE.”

Published

on

Credit: Tesla

Tesla announced its delivery timeline for the Cybertruck as it heads to a new market.

Tesla Cybertruck deliveries started in the United States and Canada back in late 2023. However, the company has been looking to expand the all-electric pickup to new markets, including the Middle East, for which it opened up orders for earlier this year.

Initially, Tesla planned to launch deliveries late this year, but there has been a slight adjustment to the timeline, and the company now anticipates the pickup to make its way to the first adopters in the United Arab Emirates in Q1 2026.

This was confirmed by the Tesla Cybertruck program’s lead engineer, Wes Morrill:

Tesla first opened orders for the Cybertruck in the Middle East in mid-September of this year. It will be priced at AED 404,900 for the Dual Motor All-Wheel-Drive ($110,254) and AED 454,900 ($123,869) for the Cyberbeast trim.

The Cybertruck has been a highly anticipated vehicle in many parts of the world, but its ability to be sold in various regions is what is truly causing delays in the company’s efforts to bring the electric pickup worldwide.

Tesla confirms Cybertruck will make its way out of North America this year

In Europe, various agencies have challenged the design of the Cybertruck, arguing that it is unsafe for pedestrians due to its sharp edges and “boxy” design.

Agencies in the EU have said the vehicle’s “blade-like” protrusions are a violation of rules that ban sharp exterior edges that could cause severe injuries.

In Asia, Tesla will likely have to develop a smaller, more compact version of the vehicle as it does not align with local standards for urban environments. However, Tesla filed for energy consumption approval for the Cybertruck in December 2024, but there has been no real update on the status of this particular inquiry.

Overall, these issues highlight a real bottleneck in futuristic vehicle designs and the out-of-date regulations that inhibit the vehicle from becoming more widely available. Of course, Tesla has teased some other designs, including a more traditional pickup or even a compact Cybertruck build, but the company is not one to shy away from its commitments.

Nevertheless, the Cybertruck will appear in the Middle East for the first time in 2026.

Continue Reading

Trending