Can my e-bike motor be repaired or does it need replacing?

In many cases, yes, bearings, belts, seals and some electronics can be repaired or replaced, which is usually cheaper than a new drive unit. If a motor is uneconomical to fix, we’ll quote a replacement and explain why it’s the better option.

How much does an e-bike motor repair cost?

Costs depend on the fault and parts. Minor fixes are at the lower end; full overhauls with bearings/belts and resealing are higher. You’ll get a clear quote after diagnosis, so you only proceed when the numbers make sense.

How long does the repair take?

Simple, external fixes can be completed on the day. Internal rebuilds typically take several working days depending on parts and testing. We handle removal, logistics and re-installation to keep your downtime low.

Do you service Bosch / Shimano / Bafang / Yamaha / Brose / Mahle motors?

Yes, we support all major systems. We handle on-site diagnosis, removal and refit, and we manage specialist internal repairs for your specific motor family.

Will a motor repair affect my warranty?

If you’re still under a manufacturer warranty, we’ll point you to the appropriate route first. For out-of-warranty bikes, our documented process and quality parts keep things straightforward, and we’ll explain any implications before work begins.

E-Bike Motor Repairs in London: Bosch, Shimano, Brose and All Major Brands

Motor cutting out, noisy or losing power? For a callout fee of only £44.77, regardless of the number of bikes, we come to you anywhere in London to diagnose your electric bike motor. If internal repair is required, we remove the drive unit and manage a specialist send-away repair with a trusted UK partner, then reinstall and road-test on return. Fully insured to work on road legal e-bikes, count on us for quality workmanship and expertise today.

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Comprehensive Electric Bike Motor Assessment (Mobile)

When it’s more than just a simple mechanical fault, we provide a thorough e-bike motor repair service. Our mobile technicians find the root cause, explain the issue clearly and advise on the most effective course of action, so you can get back on the road with confidence.

E-Bike Motor Diagnostics and Inspection (On-Site)

Our on-site diagnostics and inspection service takes the guesswork out of fault finding. We run full performance tests, checking controller signals, sensor inputs, temperature trends and wiring integrity. If your display shows a warning code, we carry out a precise inspection and recommend the next steps, ensuring you know exactly what’s going on with your motor.

Diagnostics and Inspection

Sensors, Wiring and Connectors (On-Site Fixes)

Not every motor issue requires a replacement. Often, problems are linked to a speed/torque sensor, a hidden wiring fault or connector damage caused by water ingress at interfaces. We inspect magnet alignment, test continuity, reseal components where needed and repair or replace parts on the spot. Every fix is followed by a road test to confirm the issue is fully resolved.

Sensors, Wiring and Connectors

Internal Motor Overhaul and Rebuild (Send-Away)

If your motor needs more than an external fix, we can arrange a specialist motor overhaul through our trusted partners. This includes bearing replacement, belt replacement, seals and full internal checks. Once the rebuild (via our partner) is complete, we refit the motor, run system tests and carry out a road test to ensure everything performs as it should.

Overhaul and Rebuild

Motor Replacement (When Necessary)

Sometimes, a motor is beyond economical repair. In those cases, we provide drive unit swap services using genuine parts. We’ll quote you the options, manage ordering and handle the full fitment and setup to ensure a reliable, cost-effective solution that keeps your e-bike performing at its best.

Motor Replacement

What We Update and Diagnose

Bosch eBike Systems (Smart System and System 2)

Domex Bikes is an approved service for Bosch e-bikes helping you take care of your e-bike and ensuring you are in safe hands.

Shimano STEPS & Di2 (via E-TUBE)

As UK’s first truly mobile service center, Domex Bikes is a proud to be Shimano Service Partner that comes to you. From regular service to necessary software updates our mechanics can assist you with your latest Shimano gear.

All Major E-Bike Motor Brands Covered

We provide expert e-bike motor repair and servicing across all leading systems, so no matter what you ride, you’re in safe hands. Our technicians work with Bosch, Shimano, Yamaha, Brose, Bafang, Mahle (X35/X20), Impulse, TQ, and Giant (Yamaha/Giant systems), providing a professional solution for every rider.

The models we most commonly see include the Bosch Performance Line and Active Line, Shimano STEPS series, Yamaha PW, Brose S/TF, Bafang hub and mid-drive, Mahle X35, Hena, Fazua, and TQ HPR systems. Whether it’s diagnostics, sensor checks or a full motor rebuild, we’re experienced across the full spectrum of major e-bike motor brands.

Common E-Bike Motor Problems We Handle

Our certified e-bike mechanics are trained to diagnose and resolve the most frequent e-bike motor problems that riders experience. From electrical faults to mechanical wear, we provide clear explanations and practical solutions to keep your motor running smoothly.

Power cut-outs/no assist: Often linked to sensors, wiring or a faulty controller.
Grinding, creaking or play: Typically caused by bearing wear or belt wear, requiring a specialist partner overhaul.
Overheating or system warnings: We run tests, assess the fault and advise on next steps before issues escalate.
Water ingress effects: External sealing can often solve the issue; deeper damage may require internal remediation via our trusted partner.
Unusual vibrations or resistance: We perform full diagnostics, then advise on whether a repair or replacement is the most cost-effective option.

With our step-by-step approach, you get accurate fault finding, transparent recommendations and peace of mind that your motor is in expert hands.

Our Mobile E-Bike Motor Repair Process

We make e-bike motor repair simple and transparent, handling everything from initial checks to specialist overhauls. Here’s how the process works:

On-Site Diagnosis (Domex)
We come to you in London or Surrey to carry out a full diagnosis, running functional checks and live tests to confirm the likely fault. If it’s an external issue (such as sensors, wiring, connectors or sealing at interfaces) we’ll fix it on the spot, wherever possible.
Removal and Dispatch (Domex)
When internal work is needed, we safely remove the drive unit, securely package it and manage insured shipping to our trusted UK specialist partner for assessment.
Specialist Overhaul/Repair (Partner)
Our partner carries out all internal motor work, including a full motor overhaul/rebuild, bearing replacement, belt replacement (e.g., Brose systems) and internal mechanical/electronic repairs. Every motor undergoes thorough bench testing, and you’ll receive a clear quote for approval before any work begins.
Re-Installation and Test Ride (Domex)
Once the repaired unit returns, we refit it with correct mountings and torque settings, complete the system setup, and perform a full road test. You’ll also get a short handover explaining the work done and any recommended care notes.

Timeframes & Scope

Minor external fixes: Often completed the same day.
Send-away overhauls – Turnaround depends on workload and parts availability, but we keep you updated throughout the process.
Battery policy: We do not open or service batteries. However, we can check external charging behaviour and connectors for faults.

Who Does What (At a Glance)

Domex Bikes (On-Site): Diagnosis and inspection, external fixes (sensors/wiring/connectors), motor removal and secure packaging, refit, configuration and road test.
Specialist Partner (Off-Site): Internal overhaul/rebuild, bearing and belt replacement, internal mechanical/electronic repairs, and final bench testing before return.

Why Choose Our Mobile E-Bike Motor Repair Service?

Mobile, On-Site Expertise

With our mobile e-bike repair team, there’s no need for a shop drop-off. We come directly to your home or workplace across London and Surrey to provide fast, professional mobile e-bike motor repair. From initial electric bike motor diagnostics to removal, and from e-bike motor inspection to refit after specialist work, we keep downtime to a minimum.

Brand-Trained, E-Bike-Only Mechanics

Our technicians are Bosch- and Shimano-trained specialists, experienced with Bosch e-bike motor repair, Shimano STEPS motor repair, and all major systems including Yamaha e-bike motor repair, Brose e-bike motor repair, Bafang motor repair, Mahle e-bike motor service, Impulse, TQ, Hyena and Fazua. Using dealer-level software and equipment, we ensure precise e-bike motor servicing, correct torque settings, alignment, and sealing, all documented from start to finish.

Safe Removal, Clean Refit and Test Ride

We handle every detail of your e-bike motor service: hub-motor cable routing, sensor alignment, mount torque and brake/clearance checks. After refitting, your motor is road-tested to confirm performance. Whether it’s a motor tune-up, e-bike motor noise/creaking fix or a full e-bike motor rebuild, you’ll receive plain-English notes after every job.

Transparent Pricing and Approvals

We believe in clear, fair pricing for every e-bike motor repair service near me. Each visit has a flat £44.77 callout and assessment fee, with itemised costs for removal and refit. For internal work such as e-bike motor bearing replacement, e-bike motor belt replacement or a complete e-bike motor overhaul, we provide a detailed quote for your approval before anything goes ahead. No surprises.

Professional mobile service • Warranty-aware • Same-week callouts • Transparent pricing

Related Mobile E-Bike Repair & Maintenance Services

Beyond motor work, we keep your e-bike sweet day to day:

E-Bike Software Updates & Fault Finding
Convert Your Regular Bike to an E-Bike
E-Bike Brake Service & Bleeding
E-Bike Puncture & Tyre Repair
Drivetrain Care (Chain, Cassette, Chainring)

Need Urgent E-Bike Repairs or Software Updates?

Don’t let a faulty motor, battery or software glitch slow you down. Our Bosch and Shimano-certified technicians provide reliable mobile repairs across London and Surrey.

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Is Your Area Covered?

We provide e-bike motor repair in London and Surrey. Searching for “e-bike motor repair near me”? Book a mobile visit and we’ll come to you.

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FAQs

Can my e-bike motor be repaired or does it need replacing?
In many cases, yes, bearings, belts, seals and some electronics can be repaired or replaced, which is usually cheaper than a new drive unit. If a motor is uneconomical to fix, we’ll quote a replacement and explain why it’s the better option.
How much does an e-bike motor repair cost?
Costs depend on the fault and parts. Minor fixes are at the lower end; full overhauls with bearings/belts and resealing are higher. You’ll get a clear quote after diagnosis, so you only proceed when the numbers make sense.
How long does the repair take?
Simple, external fixes can be completed on the day. Internal rebuilds typically take several working days depending on parts and testing. We handle removal, logistics and re-installation to keep your downtime low.
Do you repair e-bike motors yourselves?
We diagnose on-site, and if internal work is needed we remove the unit and manage a specialist send-away repair with a trusted UK partner. We then reinstall and road-test the motor when it returns.
Do you service Bosch / Shimano / Bafang / Yamaha / Brose / Mahle motors?
Yes, we support all major systems. We handle on-site diagnosis, removal and refit, and we manage specialist internal repairs for your specific motor family.
Will a motor repair affect my warranty?
If you’re still under a manufacturer warranty, we’ll point you to the appropriate route first. For out-of-warranty bikes, our documented process and quality parts keep things straightforward, and we’ll explain any implications before work begins.