Cannondale Controller & Display Settings: A User’s Guide

Cannondale’s e-bike lineup—from the Tesoro commuter to the Synapse NEO road bike—uses Bosch drive systems almost exclusively. That’s good news for owners: the display and controller menus share the same underlying logic across models, even when the screens look different. Whether you’re trying to switch from km/h to mph, fix an inaccurate speed readout, or understand why your range estimate dropped, the settings you need are buried in a few specific menus. This guide shows you where they are and what to change—without sending you into dealer-only territory.

What You Need Before Changing Any Settings

Gather these before you start:

• The bike’s manual (or a photo of the display’s button layout) — the walk-assist button location varies slightly between handlebar configurations.
• A small Phillips screwdriver — only needed if you’re correcting a wheel-size or speed-sensor issue.
• A GPS device or phone app that records speed — you’ll use it to verify your changes worked.
• The bike powered off — most settings menus require a cold start to access.

Also confirm which display you have. Cannondale has shipped three Bosch displays in recent years:

Display	Typical Cannondale Models	Key Controls
Bosch Kiox	Tesoro, Synapse NEO, Topstone NEO	Two side buttons + color touchscreen
Bosch Purion	Adventure NEO, Trail NEO (entry trims)	Single thumb wheel + button
Bosch Intuvia (older)	2019–2021 models	Separate remote unit on left grip

If you see a “P” menu when holding the walk-assist button during startup, you’re on a Bosch system. That’s where the deeper configuration lives.

Entering the P-Settings Menu

The P-settings menu is the configuration layer that controls wheel size, units, auto-off timing, and a few motor parameters. It’s not part of daily riding, but it’s where most owner-level fixes happen.

To enter P-settings on most Bosch displays:

1. Turn the bike completely off.

2. Hold the walk-assist button (on the left grip, marked with a “W” or walking-person icon).

3. While holding it, turn the battery on.

4. Keep holding until the display shows “P” followed by a number.

5. Use the +/− buttons or thumb wheel to scroll through parameters.

The menu stays active until you power off. If you don’t see “P” after five seconds, release and try again with a firmer press—some grips require a deliberate hold.

P-Settings Explained: What Each Value Controls

Here are the parameters you’re most likely to need, with the mechanical reasoning behind each one.

• P01 – Wheel circumference (mm): This is the single most impactful setting for accuracy. The motor’s speed sensor counts wheel rotations, then multiplies by this number to calculate speed and distance. A wrong value throws off your speedometer, odometer, and range estimates simultaneously. For a 700c road tire, expect values around 2100–2200 mm. For 27.5″ mountain tires, roughly 2200–2300 mm. If you swapped tires, this number needs to change.

• P02 – Speed sensor magnet position: Left at default unless you replaced a wheel or sensor. The magnet on your rear wheel spoke must pass within 1–2 mm of the sensor mounted on the frame. If the gap is wider, you’ll get intermittent speed readings or error code 510.

• P03 – Auto-off timer: How long the system waits before sleeping when idle. If your display goes dark mid-conversation at a coffee stop, increase this value. The default is usually 10 minutes.

• P04 – Units (km/h vs mph): Toggle this for US riders who want miles per hour. Changing this also converts the odometer and trip computer automatically.

• P05–P10 – Motor tuning parameters: These adjust torque delivery and support characteristics. Most riders never touch these, and changing them without a dealer-level diagnostic tool can produce unpredictable behavior. The motor’s torque sensor calibration lives here—incorrect values can make assist feel jerky or unresponsive.

Concrete example: If your Tesoro shows 25 mph on the display but your GPS says 23 mph, check P01. A tire swap from 700x32c to 700x38c changes the rolling circumference by roughly 60 mm—enough to skew speed readings by 3–4%. That might not sound like much, but it compounds: over a 50-mile ride, your odometer will be off by nearly 2 miles, and your range estimate will be pessimistic because the system thinks you’re traveling faster than you are.

Adjusting Pedal Assist Levels (PAS)

Your display’s assist modes (Eco, Tour, Sport, Turbo on Bosch systems) control how much motor power responds to each pedal stroke. The relationship is direct: more assist equals more battery draw per mile.

Here’s what changes when you switch modes:

• Eco: Motor delivers roughly 40% of your pedal input. Range extends significantly, but acceleration feels natural—like riding a slightly tailwind-assisted bike.
• Tour: About 120% support. Good for mixed terrain where you want a boost without draining the battery in 20 miles.
• Sport: Around 200% support. The bike does most of the work. Expect range to drop by roughly 40–50% compared to Eco.
• Turbo: Maximum 340% support. Only use this for steep climbs or strong headwinds; it can halve your effective range again.

The mechanism that matters: Bosch systems measure crank torque (not just cadence). That means the harder you push, the more power the motor adds—up to the mode’s ceiling. If you want more exercise, drop to Eco and push harder; the motor won’t fight you. If you’re hauling groceries on a 6% grade, Turbo turns a leg-burning grind into a manageable effort.

To change modes mid-ride, use the display’s mode button (Kiox) or the wheel selector (Purion). The current mode always appears on screen.

A practical range strategy: On a 30-mile commute with mixed terrain, start in Tour and drop to Eco on flat sections. The torque sensor means Eco still gives you meaningful assistance when you push harder—it just caps the ceiling. Most riders see 15–20% range improvement with this approach compared to staying in Tour all day.

Switching Between MPH and KM/H

US riders often find their bike shipped in metric mode, especially if the previous owner bought it overseas or the unit was reset.

On Kiox displays:

1. Enter the settings menu from the home screen (swipe down or press the menu icon).

2. Select “System Settings” then “Units.”

3. Choose mph or km/h.

4. Confirm and exit.

On Purion displays:

1. Enter P-settings using the walk-assist method described above.

2. Find the parameter labeled with a speedometer icon (usually P04).

3. Toggle between km/h and mph.

4. Exit and restart the display.

Note that changing units also affects the odometer and trip computer. The conversion happens automatically, but your trip data resets. If you’ve been tracking mileage in one system, write down your current trip totals before switching.

Error Codes and What They Mean

When something goes wrong, the display shows a code instead of your speed. Here are the ones you’re most likely to encounter:

Code	Meaning	Likely Fix
510	Speed sensor signal lost	Check the magnet on the rear wheel and the sensor on the frame; realign if needed
520	Motor communication error	Power cycle the system; check cable connections at the motor
530	Battery communication error	Reseat the battery; clean the contacts
540	Display communication error	Check the cable between display and handlebar
550	Internal system error	Try a full reset; if it persists, dealer service required
570	Overheating	Let the motor cool; reduce assist level on long climbs

Concrete example: Code 510 is the most common issue riders hit after transporting their bike on a rack. The rear wheel gets bumped, the magnet shifts a few millimeters, and the sensor can’t detect each rotation. The fix takes 30 seconds: loosen the magnet’s bolt, position it within 1–2 mm of the sensor line, and tighten. The display should clear the error on your next ride.

Verification step: After fixing a 510 error, spin the rear wheel by hand with the bike on a stand. The display should show a speed reading that matches your spin rate. If it still shows zero or an error, the magnet-to-sensor gap is still too wide.

If you see a code not listed here, write it down before powering off. The display history stores the last few errors, which helps a mechanic diagnose intermittent issues.

Model-Specific Notes

Tesoro (Bosch Kiox)

The Tesoro’s display supports Bluetooth connectivity through the Bosch eBike Flow app. You can customize assist characteristics, set range targets, and update firmware through the app. The Kiox also records ride data—speed, cadence, power output—which you can review after each ride.

Synapse NEO (Bosch Kiox)

This road e-bike uses the same display but with a road-specific tune. The motor’s torque delivery is smoother at high cadence (90+ rpm), which matters if you’re training. In the Flow app, you can adjust the “dynamic” vs. “sport” response curve—dynamic feels more natural for group rides, while sport gives a sharper kick when you accelerate.

Adventure NEO (Bosch Purion)

The Purion’s small screen shows speed, battery, and assist level. It lacks the Kiox’s navigation and ride logging, but it’s simpler to use with gloves on. The P-settings menu works the same, so you can still adjust wheel size and units.

Older Models (Bosch Intuvia)

If your Cannondale is from 2019–2021, the Intuvia display has a larger screen with a separate remote. The P-settings menu is accessed the same way (hold walk-assist while powering on). The Intuvia also has a “range” estimate based on your recent riding style—if it shows a surprisingly low number, check that your assist mode hasn’t been left in Turbo.

Resetting to Factory Defaults

If you’ve changed settings and want to start fresh:

1. Enter P-settings.

2. Scroll to the reset parameter (usually the last P-value).

3. Confirm the reset.

4. Power off and on.

This clears all custom parameters, including wheel size and units. You’ll need to re-enter your correct wheel circumference and preferred units afterward.

Why this matters: A previous owner or shop may have adjusted settings for a different tire size or riding style. A reset gives you a known baseline before making your own changes.

Verification step after reset: Re-enter P-settings and confirm P01 shows the default wheel circumference for your tire size, and P04 shows your preferred units. Then take a short ride and compare the display speed to a GPS app. If they match within 1 mph, your configuration is correct.

When to Stop and See a Dealer

Some settings—particularly motor tuning parameters beyond the basic P-menu—require Bosch’s diagnostic software. If your bike behaves erratically (e.g., assist cuts out at random, or the motor delivers full power in Eco mode), don’t try to fix it through the display. A dealer can read the system logs and identify whether it’s a sensor issue, firmware bug, or hardware fault.

Concrete stop threshold: If you’ve verified the speed sensor alignment, confirmed the wheel circumference is correct, and the display still shows error 510 or 550 after a full power cycle, stop troubleshooting. Continuing to ride with an unresolved motor communication error can leave you stranded mid-ride with no assist. A dealer visit is warranted at this point.

Also note: modifying certain motor parameters can void your warranty or make the bike non-compliant with local e-bike regulations. In the US, Class 1 and Class 2 e-bikes are limited to 20 mph motor assistance, and Class 3 to 28 mph. Changing speed-related settings to exceed these limits isn’t just a warranty issue—it can affect where you’re legally allowed to ride.

Getting the Most From Your Display

The display is your window into the battery’s state of charge, not just a speedometer. On Bosch systems, the battery percentage is accurate to within a few percent, but the range estimate fluctuates based on your recent assist usage. If you’re planning a long ride, use the range estimate as a conservative guide—it assumes you’ll keep riding the way you have been for the last few miles.

For daily commuting, set your display to show battery percentage and trip distance. For weekend rides, switch to the range view and use Eco mode for the first half of the ride, then bump up assist as your legs tire. This simple strategy typically extends range by 15–20% compared to riding in Tour all day.

The settings on your Cannondale’s display are there to make the bike work for your specific riding style, terrain, and fitness level. Take a few minutes to set the wheel size correctly, choose your preferred units, and understand what each assist mode does to your range. The bike will feel more responsive, and you’ll avoid the frustration of a dead battery halfway through a ride that a lower assist mode could have prevented.