A smart-lock warranty replacement can fix a failed motor, keypad, radio, or interior module and still leave the door less reliable than it was before. The risk is not limited to hardware. Codes can survive in the wrong account, a replacement can be fitted to a dragging deadbolt, automations can point to an old accessory, and the only working backup key can be inside the home.
This checklist turns a warranty exchange into a controlled security change. It covers the evidence to collect before removal, the exact parts the maker is replacing, door-fit records, household access, account ownership, backup entry, privacy, removal of the old device, and a 75-minute acceptance test. Use the current instructions and support case for the exact lock model. Do not assume the replacement follows the same setup path because the box or product name looks familiar.
Smart-lock warranty replacement at a glance
| Stage | Record | Pass condition |
|---|---|---|
| Support case | Case number, exact model, serial, fault, approved remedy, return deadline | The written approval matches the installed lock and failed part |
| Access continuity | Primary code, backup code, mechanical key, emergency power, reachable helper | Two independent entry paths work before any part is removed |
| Door fit | Backset, bore, thickness, handing, deadbolt travel, strike alignment, clearance | The deadbolt moves freely by hand with the door open and closed |
| Accounts | Owner, administrators, household members, vendor app, bridge, home platform | The intended owner controls the new device and the old device is removed |
| Credentials | Named codes, schedules, expiry, physical keys, former users | Only current people retain working access |
| System links | Alarm, Apple Home or other platform, routines, notifications, battery alerts | Every retained link is rebuilt and tested against the new accessory |
| Old hardware | Reset state, labels, stored logs, keys, return packaging, tracking | No usable credential or account link leaves with the returned unit |
| Acceptance | Twenty lock cycles, alerts, outage result, backup entry, household handoff | Every required path passes and failures have an owner and deadline |
Freeze the current access state before troubleshooting changes it
Start while the existing lock is still installed unless the maker or a safety issue requires immediate removal. Take clear photos of the exterior keypad, interior module, battery compartment, model label, door edge, latch or bolt, strike, hinges, and the gap around the closed door. Save the app’s device name, room, firmware version, battery reading, users, schedules, integrations, and recent fault messages.
Create one replacement record with:
- property and door name;
- manufacturer, exact model, finish, and regional version;
- serial number and any module or bridge serial;
- purchase date, seller, order number, and proof of purchase;
- installation date and installer if one was used;
- support case number and each contact date;
- fault description in plain language;
- tests already run and their results;
- approved replacement part or full-lock exchange;
- what must be returned, the deadline, and the tracking method;
- the person responsible for the exchange and final sign-off.
Do not run a factory reset, delete the accessory, or discard batteries until support confirms what evidence they need. A reset can erase the failure state that supports the claim. It can also end the household’s only app-controlled entry path before the replacement is ready.
Confirm what the warranty shipment does and does not include
“Replacement lock” can mean a full exterior and interior assembly, an interior motor module, a keypad, a battery pack, a bridge, a mounting plate, or a refurbished unit. Match the support approval, shipping notice, and received parts before scheduling the change.
Record these answers in writing:
- Is the replacement new, refurbished, or a service part?
- Does it keep the same keyway and physical key, or will key control change?
- Are mounting hardware, adapters, tailpieces, strike parts, and batteries included?
- Will the existing bridge, keypad, fingerprint reader, or door sensor remain compatible?
- Does the replacement start a new warranty term or continue the original one?
- Who pays removal, refitting, locksmith work, shipping, and any non-covered door repair?
- Must the old device be returned before or after the replacement arrives?
- What data, codes, logs, or account links remain on the returned component?
- What happens if the replacement fails the installation test?
If labor is involved, use the smart-lock installer quote checklist to separate covered device work from door, frame, wiring, or locksmith work that may be billed separately.
Build two independent entry paths before removal
A working phone app is not a complete lockout plan. Before touching the installed lock, prove two entry methods that do not fail for the same reason. A sound pair might be a tested mechanical key held by the resident and a second key held by a nearby trusted contact. Another might be a mechanical key plus the exact emergency-power method documented for the lock.
Use the mechanical-key backup checklist and emergency-power test. Prove the route from outside the closed door. Do not count a key stored behind that door, an emergency contact who is away, or a USB port that has never been tested.
Plan the work window around household needs:
- choose a time when the property can remain attended;
- tell residents and expected visitors which entry will be unavailable;
- pause cleaner, caregiver, contractor, pet-sitter, and delivery codes if the work could expose them;
- keep children, pets, and loose hardware away from the open doorway;
- do not leave the property with an unlatched door while setup is incomplete;
- keep the old hardware and every adapter until the new lock passes.
Separate device failure from door failure
A replacement motor will not fix a deadbolt that rubs the strike, a sagging door, a loose hinge, a warped frame, or the wrong tailpiece. Test the mechanical path before installation. With the door open, move the bolt by hand. Close the door gently and repeat. The bolt should reach its full position without lifting, pushing, or pulling the door.
Record backset, bore diameter, door thickness, handing, edge clearance, trim clearance, deadbolt type, strike position, and any security screen or storm-door conflict. Follow the smart-lock physical security audit for the door, deadbolt, strike, and cylinder. Use the door-handing and calibration checklist when the replacement needs motor learning or handing detection.
Stop and correct the door before relying on the new motor if:
- the bolt binds when the door is closed;
- the door must be pulled or lifted to lock;
- the strike is loose or the screws no longer hold;
- the bore or mounting plate is damaged;
- the tailpiece is forced, bent, or the wrong length;
- the interior thumb turn cannot move freely;
- weather, paint, swelling, or trim blocks travel;
- the inside release creates an egress concern.
Use an account and credential cutover plan
Decide which person will own the replacement before setup. That person should have the correct vendor account, recovery method, phone access, and authority for the home. Do not let an installer, former resident, property manager, or temporary helper become the only owner.
Create a credential table before the cutover:
| Person or role | Access type | Schedule | Alert owner | Keep, replace, or remove |
|---|---|---|---|---|
| Primary resident | Named app account and unique code | Always | Primary and backup phone | Replace and test |
| Second resident | Named member and unique code | Always | Own phone where needed | Replace and test independently |
| Caregiver or helper | Named scheduled code | Only the approved care window | Resident or agreed backup | Reissue only when still needed |
| Cleaner or contractor | Temporary scheduled code | Job window only | Property owner | Expire after the job |
| Emergency contact | Documented key or code | Emergency use | Household | Prove and seal the handoff |
| Former user | Old code, app membership, key | None | None | Remove and verify failure |
Do not copy every old credential into the replacement by default. Use the smart-lock access-code audit to remove stale users, replace shared codes, and give each retained person a named path. Test one valid code, one expired or removed code, and the app path for each administrator.
Remove the old accessory without leaving a second control path
Follow the maker’s order for deleting or resetting the old device. The safe order may depend on whether settings are stored in the lock, bridge, app account, alarm system, or home platform. Keep screenshots of the old membership and automation state before removal.
Check all of these places:
- manufacturer app and web account;
- Apple Home or another smart-home platform;
- alarm-system app, hub, and arming routines;
- voice assistants and speaker households;
- automation platforms and webhook services;
- shortcuts, scenes, schedules, and geofence rules;
- property-management, cleaner, or guest-access tools;
- notification groups, shared phones, watches, and tablets.
A device tile disappearing from one app does not prove the accessory is removed everywhere. Confirm that the old lock cannot be controlled, that its codes no longer open the door, and that old routines do not create errors or false status. Factory-reset the returned hardware only when the maker’s instructions and evidence requirements allow it.
Install and commission the replacement as a new security device
Do not skip setup steps because the same model worked before. Verify the mounting plate, tailpiece, cable routing, battery orientation, handing, calibration, bridge placement, firmware, time zone, and device name from the start. Keep the door open until basic lock and unlock travel passes.
Use the smart-lock installation acceptance test and record:
- manual bolt travel with the door open and closed;
- inside thumb-turn operation;
- exterior keypad or reader operation;
- mechanical-key operation where present;
- primary and backup administrator control;
- named resident and scheduled guest codes;
- wrong-code and failed-attempt behavior;
- auto-lock only after door-state behavior is proven;
- local, remote, and platform status;
- lock, unlock, jam, low-battery, and offline alerts;
- alarm and smart-home routines rebuilt against the replacement;
- internet-ended, bridge-ended, phone-ended, and low-power states;
- recovery after power and network return.
Do not transfer automations without replaying their failure cases
A replacement may receive a new accessory identifier even when the visible name stays the same. Rebuild or inspect every scene, schedule, geofence, alarm link, and notification. Check whether a routine that says “Front Door” points to the new lock or an unavailable old record.
Test safe cases first. Confirm that an arrival routine does not unlock for the wrong household member, an auto-lock rule does not run while the door is open, a night scene does not hide a failed lock, and an alarm-disarm routine does not depend on an unproved integration. Keep manual control available throughout testing.
Protect the returned device and the warranty record
Photograph the returned components and serial labels, then record the carrier, tracking number, drop-off receipt, delivery result, and support confirmation. Remove batteries when the maker and carrier rules require it. Do not include house keys, adapters, tools, or mounting parts unless the return instructions list them.
Keep a final case folder with:
- support approval and warranty terms;
- old and new serial numbers;
- shipping and delivery records;
- door-fit measurements and photos;
- credential and account cutover record;
- reset and removal proof for the old device;
- new installation and acceptance results;
- open faults, owners, and deadlines;
- the next battery, firmware, and access review dates.
Smart-lock warranty replacement scorecard
| Control | Pass | Fail | Owner and deadline |
|---|---|---|---|
| Written support case matches the exact failed model and part | |||
| Two independent outside entry paths work | |||
| Door, bolt, strike, and cylinder pass mechanical inspection | |||
| Replacement owner and backup administrator are correct | |||
| Only current residents and approved helpers retain access | |||
| Old device is removed from every account and platform | |||
| Twenty mixed lock cycles complete without binding or false state | |||
| Alerts, integrations, outages, and recovery are tested | |||
| Return shipment and warranty records are complete | |||
| Household handoff and future maintenance dates are recorded |
Run a 75-minute smart-lock replacement acceptance test
Minutes 0–15: identity, fit, and ownership
- Match the new model and serial to the support case.
- Confirm the intended account owner and backup administrator.
- Test manual bolt travel with the door open and closed.
- Confirm the mechanical key or other backup entry is outside and working.
Minutes 15–30: local access
- Run five inside thumb-turn cycles.
- Run five primary-code cycles.
- Run five second-resident or approved-helper cycles.
- Run five mechanical-key or documented fallback cycles.
- Record any drag, delay, jam, rebound, or wrong state.
Minutes 30–45: credentials and alerts
- Test each named administrator separately.
- Test one scheduled code inside and outside its allowed window.
- Confirm one removed code fails.
- Confirm lock, unlock, wrong-code, offline, and low-battery alert ownership where supported.
Minutes 45–60: integrations and failure state
- Confirm every retained routine points to the new device.
- Test safe alarm and home-platform status changes.
- Review the documented internet-ended and bridge-ended state.
- Prove the backup entry route with app access unavailable.
Minutes 60–75: removal, return, and handoff
- Confirm the old device is absent from apps, platforms, routines, and memberships.
- Record reset state and every returned component.
- Give residents the new access and lockout card.
- Assign an owner and deadline to each failed item.
- Schedule battery, code, firmware, and door-fit reviews.
Do not close the warranty case until these blockers are cleared
- The replacement model, part, keyway, or finish does not match the written approval.
- No tested entry path works without the app.
- The bolt binds, the door must be pushed or lifted, or calibration fails.
- The installer or temporary helper is the only account owner.
- A former resident, guest, cleaner, or contractor still has working access.
- The old device remains in an account, platform, scene, or automation.
- Lock state, alerts, or alarm integrations report the wrong result.
- The replacement cannot recover from the tested power, network, or bridge interruption.
- The return deadline, tracking, or required components are unknown.
- A failed acceptance item has no named owner and correction date.
If the change causes a lockout, use the smart-lock lockout recovery checklist. For future battery work, keep the battery replacement checklist with the door record.
Frequently asked questions
Should I factory-reset the failed smart lock before the replacement arrives?
Not until the maker confirms it has the failure evidence it needs and explains the return process. A reset can remove logs, account state, or access needed during the exchange.
Can I reuse the same access codes on the replacement?
You can reissue current named codes when the risk is understood, but a replacement is a good time to remove stale users and replace shared codes. Test each retained code and confirm removed codes fail.
Does a replacement smart lock need a new calibration?
Follow the current instructions for the exact model. Treat calibration, handing, and door-fit tests as new work even when the replacement looks identical.
What should I do with the old physical keys?
Record whether the replacement keeps the same cylinder and keyway. If key control changes, count every old and new key, update the emergency handoff, and follow the maker or locksmith guidance for unused keys.
How do I know the old lock no longer has access?
Remove it from the maker account, home platform, alarm app, voice assistants, routines, and property tools. Confirm old codes and control paths fail, then reset the returned hardware when the approved process allows it.
When is the warranty replacement complete?
Only after the new lock passes mechanical, local access, account, credential, alert, integration, failure, recovery, and backup-entry tests; the old device is removed; return proof is saved; and every failed item has an owner and deadline.
