2015 MINI Countryman Keys Won't Start It: DME and CAS Work
Quick Summary
The owner had just bought a 2015 MINI Cooper Countryman. It came with two keys, but the dash shows the key symbol with a line through it and neither key starts the car. Many owners expect getting keys working to be a quick pairing job. On this Countryman, with no working key, it is module work: the DME (engine computer) comes out, a set of hidden screws is removed so the dashboard can be lifted to get the CAS (Car Access System) out, and wires are soldered to the CAS so it can be read before the keys are programmed.
This page explains what the job involves. The work was quoted, but the customer had not booked it when this was published, so nothing here describes readings, fault codes or results from this particular car.
- Vehicle
- 2015 MINI Cooper Countryman (R60)
- Difficulty
- ★★★★★
- Repair Time
- Quoted, not yet booked
- Outcome
- Key programming quoted for the two keys that came with the car; the customer had not booked the work when this was published
Vehicle Information
| Year | 2015 |
|---|---|
| Model | Cooper Countryman |
| Chassis | R60 |
Repair Timeline
- October 2026 Complaint The owner had just bought a 2015 MINI Cooper Countryman. It came with two keys, but the dash shows the key symbol with a line through it and neither key starts the car.
- October 2026 Diagnosis With no working key, the job was quoted the same way as a lost-key job. Proof of ownership is required first, then the DME comes out, the dashboard is lifted to reach and remove the CAS, and wires are soldered to the CAS so it can be read before the two keys are programmed. The customer had not booked the work when this was published.
Customer Complaint
The owner had just bought the car, and it came with two keys. The dash shows the key symbol with a line through it, and the keys do not start the car.
Symptoms
- Key symbol with a line through it on the dash
- Neither of the two keys starts the car
No scan has been run on the car yet, so why the keys are not accepted has not been determined.
Diagnostic Process
Nothing is removed or programmed until ownership is verified. The owner must provide current registration or title and a valid government-issued photo ID.
No scan has been run and no fault codes have been read yet. When the car comes in, the CAS version, whether the CAS and DME communicate normally and the condition of both modules will be recorded before any data is written.
Repair Performed
Not yet performed. With no working key, the job quoted for this car involves:
- Verify proof of ownership and identification.
- Remove the DME and read its data.
- Remove a set of hidden screws so the dashboard can be lifted, then remove the CAS.
- Solder wires to the CAS and read it on the bench.
- Program the two keys.
- Remove the soldered wires, reinstall the CAS, refit the dashboard and reinstall the DME.
- Verify each key on the car.
Cutting the key blade is not part of this quote.
Verification
Not yet performed. When the job is done, each key will be checked on its own for:
- Engine start
- Lock and unlock from the remote
- Hatch release from the remote, if the key has that button
- No new immobiliser or module communication faults after the work
Technician Notes
A used car that comes with two keys is not proof that either key belongs to it. Customers often describe this as "programming a couple of keys" and compare prices on that basis. On this Countryman, with no key that starts the car, the labour is in getting to the modules, not in the key itself. The DME has to come out, the dashboard has to be lifted after removing a set of hidden screws, and the CAS has to come out and have wires soldered to it before it can be read. Everything then has to go back together and be checked.
The CAS and DME cannot be assumed healthy until they have been read. A module that is already damaged or cannot accept programming turns a key job into a module repair or replacement, and that has to be explained to the customer before anything is taken apart.
Lessons Learned
- When no key starts the car, MINI key programming is immobiliser module work, not remote pairing — the same job as lost keys.
- Check that the keys start the car before buying a used MINI; having two keys is not the same as having two working keys.
- Explain the full scope up front — DME removal, dashboard lift, CAS removal and soldering — so the customer can compare quotes like for like.
- Verify ownership before removing any immobiliser module or programming a key.
- Do not assume the CAS or DME is healthy until it has been read.
Final Outcome
Programming the two keys that came with the car was quoted. The customer had not booked the work when this was published. This page will be updated if the car comes in and the job is completed.
Questions About This Repair
What does the key symbol with a line through it mean on a MINI?
The car is not accepting the key. On this 2015 Countryman both keys that came with the car showed that warning and neither would start the engine.
Why can't the keys just be paired to the car?
The key is part of the immobiliser, not just a remote. A key has to carry data generated from the car's own Car Access System (CAS). When no key works, that data has to be read from the modules themselves, which on this Countryman means taking the DME and the CAS out of the car.
Why does the dashboard have to be lifted?
On this 2015 Countryman a set of hidden screws has to come out before the dashboard can be lifted far enough to remove the CAS.
Why are wires soldered to the CAS?
With no working key, the CAS is read on the bench rather than through the diagnostic port. Wires are soldered to the CAS to make that connection, and removed again before the module goes back in the car.
Why is proof of ownership required before key programming?
Programming creates a key that can start the car. Registration or title plus government-issued photo identification are checked before any module is removed or any key is programmed.
Does the job include cutting the key blade?
Not in this quote. Programming makes the key start the car and work the remote; cutting the mechanical blade is a separate job.
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