What we know about Rivian software update 2025.34 including highway assist upgrades [Update]

A new software update from Rivian was sighted earlier this month, and it’s being prepared for a full rollout to Gen 2 R1S and R1T EVs. The latest Rivian update includes upgrades to the American automaker’s Enhanced Highway Assist driving, more energy-conscious home charging capabilities, and a slew of other improvements outlined below.

Update September 25, 2025: Rivian has confirmed the details of software update 2025.34 outlined below. However, we still do not have a concrete timeline for when the update will roll out to current R1S and R1T owners.

Like most software-defined vehicles, Rivian models like the R1S and R1T receive periodic updates over-the-air (OTA). As a Rivian owner and an enthusiast, software updates are often exciting news to report on, as they usually result in new features or abilities to existing technology or enable various efficiencies (and bug fixes fixes, of course).

Over the past six months, we’ve seen updates like 2025.10, which rolled out to the public in early April, and 2025.14, which updated the BEV’s Highway Assist feature. In late May, RivianTrackr shared that software update 2025.18 was rolling out internally before launching wide to Rivian owners, and it was one of the more robust rollouts we had seen for a while.

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Most recently, a similar site called RivianRoamer has reported on a new software update, 2025.34, which has already been spotted before it makes its way out to the public

Rivian software update adds new “Co-Steer” feature

Per reports, Rivian software update 2025.34 is in the works in a beta version before it inevitably makes its way to the community of R1S and R1T owners. That being said, please note that any of these listed features or improvements could change or be removed altogether before the update goes out wide.

The first notable upgrade pertains to the Enhanced Highway Assist ADAS in Gen 2 Rivian models. Right now, the pending software update will enable a new assist feature called “Co-Steer,” which will allow a driver to adjust their given position within a lane using “gentle steering inputs” without the Enhanced Highway Assist disengaging.

Speaking of Enhanced Highway Assist, Rivian shared that the availability of the ADAS feature has increased by up to 50%, particularly on urban and suburban highways. Lastly, the 2025.34 update includes a new perception model that improves lane centering performance, especially on curves.

Additionally, Rivian’s latest pending software update will allow your vehicle to automatically charge itself during off-peak times at your home when electricity is cheaper, ensuring your vehicle is ready when you need it.

According to the report, “smart scheduling” can cut annual home EV charging costs by 20% or more and increase your use of clean energy. You can enable this feature and monitor everything through your account in the Rivian app (version 3.5 or later).

Other updates and big fixes from 2025.34 (subject to change)

• Audio improvements (Gen 2 Rivian models)
  • Fine-tuned equalization and delays to make the bass feel richer and more impactful
  • Soundstage improvements for better localization, separation, and layering
  • Improved blending of Dolby Atmos content for all listening positions
• Performance improvements
  • Updated and improved media apps, including increased touchscreen responsiveness
  • Improved Navigation stability and responsiveness
  • Improved responsiveness to mobile commands while vehicle is asleep
• Resolved rare issue that prevented users from accepting the terms of service for Rivian Navigation with Google Maps
• Fixed issue that kept Gear Guard video thumbnails from displaying properly on the Motion Cam and Incidents screens
• Resolved rare issue where the tonneau cover position is displayed incorrectly on certain screens of Gen 1 R1T models
• Resolved rare issue that caused fog lights to turn off and exterior lights to revert to Auto mode (Gen 1)
• Fixed issue that caused trip energy and efficiency data to fluctuate unexpectedly
• Improvements to the accuracy of battery range on arrival estimates, including adding location air density as a factor for locations at higher elevations
• Resolved rare issue that prevented the door handles from presenting for an unlock request while Car Wash mode is active (Gen 2 EVs)
• Reduced excessive blower noise during climate control start-up in mild conditions while maintaining cooling performance in extreme temperatures (Gen 2 EVs)
• Fixed rare issue that caused cabin conditioning requests initiated from the Rivian mobile app to fail on the first attempt (Gen 2 EVs)
• Additional improvements for 12V battery health detection, including in-vehicle and mobile app notifications to alert you when the 12V battery needs to be replaced (Gen 2 EVs)

That’s all for now. As a reminder, the above release notes pertain to a beta version of the software update, and 2025.34 could be different when it reaches Rivian owners in the coming weeks. Keep an eye out for it!

In the meantime, I recommend scheduling a test drive with Rivian if you haven’t done so yet. See if you can get behind the wheel of an upcoming R2. It’s a winner!