Step-by-Step DIY Fix Guide
- SAFETY: Do not force the door open under any circumstances.
- Perform a power cycle: unplug for 60 seconds, then plug back in.
- Wait 5 minutes after restoring power before attempting to open the door.
- If F37 persists and the door remains locked, contact Miele service immediately.
If the door warning comes back
- If the door closes normally but the warning keeps returning, the latch or switch path becomes more likely than a simple alignment issue.
- F37 appears — door unlock faults are not DIY-serviceable on Miele machines
- Door remains locked after a power cycle
What This Error Means
Error F37 on your Miele washing machine means: The washer has detected a fault specifically in the door unlock mechanism. The machine cannot release the door lock after the cycle, indicating a failure in the solenoid or wiring responsible for unlocking. The washer's self-diagnostic system has detected this condition and paused the current cycle.
The most frequent cause is door lock solenoid failure — the unlock solenoid is not receiving power or has failed mechanically. Work through the causes and fix steps below in order — most Miele washer errors are resolved without a service call.
Miele classifies F37 as a technician-only fault. A power cycle is the only DIY step — if the code returns, contact Miele service.
Miele front-loader doors require a definite push to latch properly. If the door appears closed but the error remains, open it fully and push it closed with firm pressure until you feel and hear the lock engage.
Most Likely Cause by Symptom
The Miele washing machine may stop, pause, or refuse to complete the cycle normally.
Likely cause: Door lock solenoid failure — the unlock solenoid is not receiving power or has failed mechanically
Check first: SAFETY: Do not force the door open under any circumstances.
The appliance may fail to start because the door or lock state cannot be confirmed.
Likely cause: Wiring fault in the door lock circuit preventing the unlock signal from reaching the solenoid
Check first: Perform a power cycle: unplug for 60 seconds, then plug back in.
Common Causes
- Door lock solenoid failure — the unlock solenoid is not receiving power or has failed mechanically
- Wiring fault in the door lock circuit preventing the unlock signal from reaching the solenoid
What Not to Do
- Do not use a screwdriver, knife, or any tool to pry open a locked Miele washer door — this causes irreparable damage
Model and Display Variation Notes
Model-family notes
- Miele washing machine display wording and code formats can vary by series.
- If your model behaves differently, check the owner manual before trying any deeper maintenance step.
Display and panel differences
- Panel wording can vary by series, so confirm the exact code pattern before buying parts.
Parts, Tools and Service Options
Service option
Miele service visit if the warning returns after the basic checks are complete.
Manual and model check
Check your exact model and manual before ordering any Miele washing machine parts.
Common parts
- Door lock assembly if solenoid has failed ($40-$90)
- Wiring harness if wiring fault is confirmed ($30-$80)
This section stays service-first because the page points more strongly toward support or professional repair than a routine parts purchase.
When Not to Keep Troubleshooting
F37 appears — door unlock faults are not DIY-serviceable on Miele machines
- Door remains locked after a power cycle
How to Prevent It Recurring
- Have the washer serviced if door lock faults recur — repeated F34/F35/F37 codes indicate the door lock assembly is wearing out
Related Error Codes
F34
The washer has detected a problem with the door locking mechanism. The machine cannot confirm the door is properly secured and has stopped or will not start the cycle.
F35
The washer door has locked during a cycle and cannot be unlocked by the normal mechanism. The machine has stopped the cycle and is reporting that the door release has failed.
Extra notes
- This page is based on Miele support material and stays conservative where model-specific guidance may vary.
- The goal is to help you identify safe first checks before you move into parts, service, or model-specific manual lookup.
Source and model notes
Last reviewed: 2026-04-09
Based on: Based on Miele support material and edited into consumer-safe guidance for the exact code family on this page.
View Miele USA Official Support
Model coverage note: Miele washing machine code meanings can vary by series, control panel, and model family, so use this page as a safe starting point rather than a replacement for the model-specific manual.
Important: FixThisError is an independent guide, not the manufacturer. Use your model-specific manual when the panel wording or behavior differs.
Always disconnect power before inspecting appliances. If unsure, contact a licensed appliance technician.