Control unit faulty? We repair instead of replacing.
Head units, key fobs and control units — from a frozen Tesla touchscreen to an instrument cluster with pixel errors and a water-damaged engine ECU. Board-level repair in our own lab in Frankfurt, keeping the coding matched to your vehicle.
- ✓ Board level instead of a new part
- ✓ Coding is preserved
- ✓ Own lab in Frankfurt
- ✓ Repairs only after approval
Drei Bereiche, ein Speziallabor.
Head unit & infotainment
Black screen, boot loop, unresponsive touch, no sound — we repair the head unit at component level instead of replacing it entirely.
Key fobs
Unresponsive buttons, water damage, a broken case, keyless failure — key fobs repaired instead of expensively re-programming a new one.
Control units (ECU)
Engine, ABS, transmission and comfort control units: board-level repair for water damage, dry solder joints and failed output stages.
Tesla black screen: eMMC repair instead of an MCU swap.
Tesla MCU (MCU0/MCU1) black screen — eMMC repair at smartmod
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Symptom
Black screen, freezing, boot loops — plus loss of the reversing camera and of climate and charging controls via the touchscreen.
Cause
The eMMC flash memory of the Media Control Unit (MCU0/MCU1, Tesla Model S/X approx. 2012–2018) wears out through constant write cycles (logging) — a known wear defect, not bad luck.
Repair
We remove the eMMC at chip level, transfer the data and fit new, longer-lasting memory — instead of replacing the entire MCU.
Result
Touchscreen and infotainment work fully again — considerably cheaper than an MCU replacement and without losing the vehicle configuration.
Our own work · teslareparatur.de
Was uns am häufigsten auf den Tisch kommt.
Head unit / infotainment
Common faults
- ›Black screen / faulty backlight
- ›Boot loop, freezing, restarts (flash/eMMC wear)
- ›Unresponsive touch or ghost touches
- ›No sound / faulty amplifier
- ›Reversing camera without picture
- ›Overheating, yellow tint or bubbles on the display
Affected models
Key fobs
Common faults
- ›Unresponsive buttons (worn contacts)
- ›Water damage / corrosion
- ›Broken case
- ›Corroded battery contact
- ›Keyless entry not working (aerial, transponder)
Affected models
Control units / ECU
Common faults
- ›Engine ECU (DME/EDC): water damage, corrosion, failed output stages
- ›Instrument cluster: pixel errors, failed gauge motors, lighting
- ›ABS/ESP control unit (Bosch): dry solder joints, valve and pump drivers
- ›Transmission control unit / mechatronics (DSG, ZF): solder joints, electronics
- ›Comfort and gateway modules, BMW FRM (lighting failure)
Affected models
Your model or fault is not listed? Ask anyway — we repair more than we can list here.
Repaired in three steps.
- 01
Hand it in
Drop by without an appointment in Frankfurt-Sachsenhausen — or send it in online.
- 02
Service & diagnosis
We examine the device. If the repair turns out more expensive than expected, we come back to you with a diagnosis first.
- 03
Back to you
We repair after your approval — and your device comes back. Nothing is repaired without your go-ahead.
Good to know.
Do you replace the control unit or repair it?
Wherever possible we repair at component level (microsoldering). That is usually cheaper than a new part — and the coding matched to your vehicle is preserved.
Are the coding and stored data preserved?
As a rule yes: with a repair, the original data and the coding stay on the unit. A new part would first have to be programmed to the vehicle.
Do you repair Tesla units too?
Yes — the Tesla MCU/eMMC repair (black screen) is one of our specialities, see teslareparatur.de.
How do I get my control unit to you?
Remove it and send it insured, or bring it to Frankfurt-Sachsenhausen. The diagnosis tells you in advance what is possible — we only repair after your approval.
Microsoldering
eMMC, chip or board defect? Repair at component level — the basis of every car electronics repair.
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All repairs
18 product categories under one roof — from smartphones to coffee machines.
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Send in a device
Describe the device, choose how to send it — we come back with the shipping instructions.
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Remove it and send it in — or bring it by.
No appointment needed in Sachsenhausen — or insured by post. The diagnosis tells you what is possible before anything is repaired. Up to 12 months warranty.
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