Cannondale Controller & Display Settings: A User’s Guide

Cannondale’s SmartPower system—found on models like the Tesoro X, Synapse NEO, and Adventure NEO—puts the controls on the left handlebar in a two-piece unit: a button pad and a compact LCD. The menu structure is shallow, so you can change assist levels, units, and display layouts without pulling over. This guide walks through the button layout, the settings that affect ride behavior, and the error codes you might see mid-ride.

What You Need Before Adjusting Settings

The controller draws power from the main battery, so the first check is simple: confirm the battery is seated and has charge. If the display won’t wake, press the power button on the battery itself (if equipped) to verify it’s active, then check the cable running from the display into the handlebar—it can vibrate loose over time.

For the procedures below, you’ll only need the bike itself and about five minutes. No tools are required for any user-accessible setting. The odometer and motor firmware are dealer-locked, but everything else—assist levels, units, display layout, trip reset—is adjustable from the handlebar.

Button Layout and Basic Navigation

The remote pad uses four buttons, all within thumb reach:

• Power/Mode (top): Turns the system on/off; long-press returns to the home screen from any menu
• Up/Down arrows: Adjust assist level; navigate menu items
• i (info) button: Cycles ride data screens; short-press toggles display layouts; long-press enters the settings menu

The display is not touch-sensitive, so all input flows through these four buttons. On pre-2021 Bosch-powered Cannondale models, the layout is different—those use the Bosch Purion or Kiox display. Check the logo on the display face; if it says “SmartPower,” the instructions here apply.

How to Change Assist Levels and Display Units

Step 1: Power on and check the home screen. Press Power once. The display shows current assist level (Eco, Tour, Sport, or Turbo), battery percentage, and speed.

Step 2: Adjust assist while riding. Tap Up or Down once. The new level displays for two seconds, then returns to the speed readout. The torque sensor responds within a single pedal stroke—there’s no lag.

Step 3: Change the display layout. From the home screen, press and hold the i button for 1 second. This cycles through three layouts:

• Layout 1: Speed (large), battery, assist level
• Layout 2: Speed, trip distance, ride time
• Layout 3: Speed, average speed, max speed

Step 4: Switch units (mph/km/h). Press and hold i for 3 seconds to enter the settings menu. Navigate to Settings → Units using the arrows, press i to select, choose your preference, and confirm. This is a global setting—it changes the speed readout and odometer together.

Step 5: Reset trip distance. Go to Trip Data → Reset Trip and confirm with i. Note that the trip resets automatically after the bike is off for more than 4 hours; the total odometer cannot be reset through the user menu.

Verification: After changing units, ride a short stretch past a known distance marker or compare against a GPS app. If the reading is off, check the wheel size setting in Settings → Wheel Size—a 700c wheel should be set to 29 inches (622mm). Incorrect tire pressure also skews the reading.

Assist Levels: What Each Mode Actually Does

The SmartPower system uses a torque sensor, which measures how hard you press the pedals rather than just whether they’re turning. Each assist level applies a multiplier to your pedal force, so the mechanical outcome is predictable:

Assist Level	Power Delivery Relative to Input	Best Used For
Eco	~30–50%	Range maximization, flat terrain, low battery
Tour	~75–100%	Commuting, mixed terrain, moderate headwinds
Sport	~150–200%	Hills, faster commutes, heavy cargo
Turbo	~250–300%	Steep climbs, quick acceleration, strong headwinds

The percentages vary by motor generation, but the relationship holds: each step up roughly doubles the assist multiplier. If you’re carrying a loaded pannier or commuting with a laptop bag, Sport mode will feel noticeably more responsive than Tour. On flat ground with a full battery, Eco extends range by roughly 30–40% compared to Turbo because the motor isn’t constantly pushing against your cadence.

There’s a thermal consequence to higher assist levels too. Sustained Turbo riding draws more current, which heats the motor. On a hot day, a long climb in Turbo can trigger the E-04 overheating code. Dropping to Sport for the climb and returning to Turbo on the descent keeps the system cooler and prevents the motor from throttling back mid-hill.

Reading the Battery Display and Range Estimate

The battery icon in the top-right corner shows charge in 10% increments. Below 20%, the icon flashes and a warning appears. This isn’t cosmetic—the motor progressively reduces power below 15% to protect the cells from deep discharge. You’ll feel the assist taper off, especially in Turbo, even if you’re pedaling hard.

The range estimate (miles remaining) is calculated from your average power consumption over the last 30 minutes, updating every 2 minutes. If you’ve been climbing in Turbo, the estimate runs conservative; after a flat Eco cruise, it runs optimistic. Treat it as a rough guide. A 625Wh battery on a Tesoro X realistically delivers 40–60 miles in Eco and 20–30 miles in Turbo, depending on rider weight, wind, and tire pressure.

You can estimate range yourself: check the trip data screen for average Wh/mile during the first few miles. Divide battery capacity by that number. If you’re averaging 15 Wh/mile in Tour, a 625Wh battery gives roughly 41 miles. Need 50? Drop to Eco and watch the average fall toward 11 Wh/mile.

System Info and Error Codes

The System Info menu (Settings → System Info) shows motor firmware version, battery firmware version, battery health as a percentage of original capacity, and total odometer. You’ll need this screen when a dealer asks for firmware during a warranty claim. If battery health shows below 80%, range will be noticeably reduced, and replacement is worth considering—Cannondale batteries are model-specific, so check the compatibility chart before ordering.

When the display shows an error code instead of the normal readout, here’s what it means:

Error Code	Meaning	Fix
E-01	Motor communication fault	Power off, wait 10 seconds, power on. If it persists, check the motor cable connection.
E-02	Throttle or speed sensor fault	Check the magnet on the rear wheel spoke; it may have shifted. Realign so it passes within ¼ inch of the sensor.
E-03	Battery communication fault	Remove the battery, clean the contacts, reinsert firmly.
E-04	Overheating	Let the motor cool for 15 minutes. Reduce assist to Tour or Eco.
E-05	Brake sensor fault	Check that the brake levers return fully after release.

If the bike won’t power on at all, remove the battery, wait 30 seconds, and reinsert it. This resets the system controller. If the code persists across multiple power cycles, the motor or controller may need replacement—take it to a Cannondale dealer rather than attempting a DIY fix, since the high-voltage wiring requires proper diagnosis.

Factory Reset and Firmware Updates

If you’ve customized settings and want to start fresh, go to Settings → Factory Reset, press and hold i for 5 seconds, and confirm. The display flashes “RESET” twice and reboots in about 10 seconds. This restores default assist levels, display layout, and units—but does not reset the odometer or trip data.

Firmware updates are a different matter. You cannot update the firmware yourself through the display; Cannondale dealers apply updates using a diagnostic tool. If you’re experiencing delayed assist engagement or inconsistent power delivery, ask your dealer to check for an update. The process takes about 15 minutes and is typically covered under warranty for bikes under 2 years old. Before the update, ensure the battery is charged above 50%—an interrupted update can fail and leave the system in a partial state.

Frequently Asked Questions

Why does my display show a lower speed than my GPS app?

The bike’s speed sensor reads from a magnet on the rear wheel. Low tire pressure or an incorrect wheel size setting will skew the reading. Check tire pressure and verify the wheel size in Settings → Wheel Size—a 700c wheel should be set to 29 inches (622mm).

Can I make the assist levels more or less powerful?

No. The assist levels are fixed by the motor controller firmware. You can only select between the preset levels, not adjust power output within each level. If you want more power, choose a higher assist level; if you want more range, choose a lower one.

Why does the battery percentage drop quickly in cold weather?

Lithium-ion batteries lose capacity in cold temperatures. At 32°F, a battery may deliver only 70–80% of its rated capacity, and the display reflects this voltage-based loss. Store the battery indoors when temperatures drop below freezing, and expect reduced range during winter rides.

My display won’t turn on. What should I check?

First, verify the battery is seated correctly and has charge—press the power button on the battery itself to confirm it’s active. Then check the cable connecting the display to the handlebar; it may have come loose. If all connections are secure, the display unit may need replacement.

How do I know which firmware version I have?

Go to Settings → System Info. The firmware appears as a string like “SM.2.4.1” for the motor and “BM.1.0.3” for the battery. Write these down before contacting support or visiting a dealer.

The SmartPower controller is designed to be set-and-forget, but the settings that matter—assist level, display layout, and units—are all reachable within a few button presses. Learn the hold times for the i button (1 second for layout, 3 seconds for menu), and you’ll be able to adjust the display at a stoplight without pulling out the manual. When an error code appears, the table above covers the common fixes; for anything that persists across power cycles, a dealer visit is the right call.