Trek e-bike troubleshooting: common problems, safe checks and where to get help

This page covers common problems on Trek e-bikes. Trek fits different drive systems to different models, so start by finding out which one your bike has. Trek's Allant+ FAQ says those bikes use Bosch motors, batteries and displays (Trek Allant+ FAQ), while the FX+ 1 FAQ says that bike uses Hyena's hub drive system (Trek FX+ 1 FAQ). For Bosch checks and codes, use our Bosch troubleshooting page. This page focuses on what is specific to Trek.

Before you start

• Find your model name and year, then get the owner's manual from Trek's manuals page. It has current and previous product manuals plus a torque reference page.
• Read your model's FAQ on trekbikes.com to see which motor, battery and display it uses.
• Check the recalls section below before you ride.

Common problems and what to check

Bike won't turn on or assist cuts out

• Charge the battery fully. Trek's Hyena code list includes low battery and empty battery warnings, and its advice for battery warnings is to recharge promptly (Trek help center).
• If the motor or controller overheats, Trek's guidance is to power the bike off and move it to a well ventilated area (Trek help center).
• On a Bosch model, follow the steps on our Bosch page.
• More help: e-bike won't turn on, motor cuts out and no pedal assist.

Throttle not working on an FX+

Trek says the FX+ 1 system works normally as a pedal assist e-bike without the throttle connected (Trek FX+ 1 FAQ). So if the throttle stops working, you can usually still ride with assist while you get it checked. See throttle not working.

Battery won't charge

• Allant+ (Bosch): you can charge through the port on the downtube or with the battery off the bike. Trek gives about 4.5 hours to full for a 500Wh battery and about 4.9 hours for a 625Wh battery on a standard charger, and says all five green LEDs light when it is full (Trek Allant+ FAQ).
• FX+ 1 (Hyena): the EasyMag charger is magnetic and snaps onto the charge mount in any orientation. A ring of LEDs shows progress, and a full charge takes up to 5.5 hours. Trek says this battery should only be removed by an authorized Trek dealer, and only the 540Wh battery made for that frame should be used (Trek FX+ 1 FAQ).
• Hyena error 68 means a charging temperature problem. Trek's steps are to stop charging, turn the bike off, move it to a ventilated room temperature spot for at least 10 minutes, then try again. If it comes back, contact Trek or a dealer (Trek error 68).
• Trek suggests treating the battery like a laptop or phone battery and bringing it inside in extreme temperatures (Trek e-bike maintenance).

Range dropping or battery getting old

Trek says most batteries last 5 to 10 years, and that slower charging, less power or shorter rides are signs a battery is near the end. Trek stores take back used batteries for recycling through Call2Recycle (Trek battery care). See battery drains fast.

App, display and firmware

• The Trek Central app pairs with your e-bike to tune motor settings, estimate range and check the connection. Trek says firmware updates through the app are only for Hyena e-bikes (Trek Central).
• Allant+ models use a Bosch Purion or Kiox display, or in North America the Bosch SmartphoneHub with the COBI.Bike app (Trek Allant+ FAQ).
• See display blank or flickering and update e-bike firmware.

Brakes, flats and noises

Use the torque page in Trek's manuals section rather than guessing bolt values. On FX+ models, check the recall below before you touch the rear wheel bolts. See e-bike brakes, flat tire and e-bike noises.

Error codes

Trek's help center lists Hyena system codes that dealers read with Trek's service tool. A few you may see (Trek help center):

• 66: battery low
• 67: battery empty
• 68: charging temperature error
• 40: motor overheat
• 80: controller overheat
• 48: speed sensor
• 49: cadence sensor
• 113: maintenance notification, which needs a dealer's service tool

Codes differ by system. Bosch equipped Treks show Bosch codes, covered on our Bosch page and e-bike error codes.

Recalls

• Model year 2026 FX+ 1 and FX+ 1S, Midstep and Stepover, sold before October 28, 2025: the rear wheel bolts can break. The original bolts are black and attach the motor to the rear frame. Stop riding and visit an authorized Trek dealer for a free repair with replacement silver bolts (CPSC notice).
• Model year 2026 Domane+ ALR 5, Domane+ ALR 6 AXS, Checkpoint+ SL 6 and Checkpoint+ SL 7: the chainring bolts can loosen. Stop riding and book a free repair at an authorized Trek dealer (CPSC notice).

Warranty and dealer service

• Warranty claims start at an authorized Trek retailer, and you need proof of purchase (Trek warranty).
• For Allant+ bikes, Trek says the Bosch motor is covered for 2 years and the battery for 500 charge cycles or 2 years, whichever comes first, both through Bosch. Retailers handle these claims with their Bosch service center (Trek Allant+ FAQ).
• Trek recommends a retailer whose mechanics are trained on e-drive systems (Trek e-bike maintenance).

Videos

Official help

• Trek manuals
• Trek help center error code list
• Trek warranty
• Trek Central app
• Trek battery care and recycling

When to get a pro

• Any battery damage, or a battery that won't charge after the steps above.
• Removing an FX+ battery, which Trek reserves for dealers.
• Codes that come back, maintenance code 113, and any motor, controller or sensor code.
• Recall repairs, hub motor wheel removal and brake bleeds.

Sources

• Allant+ FAQ, Trek
• FX+ 1 FAQ, Trek
• Manuals, Trek
• DST troubleshooting and Hyena error codes, Trek help center
• Hyena error 68, Trek help center
• Electric bike maintenance, Trek
• Battery care, Trek
• Trek Central app, Trek
• Warranty, Trek
• FX+ rear bolt recall, CPSC
• Domane+ and Checkpoint+ chainring recall, CPSC

Stuck after these checks? Find a shop near you.