Service
Electrical & Coding in Rockville, MD
Batteries, modules, sensors and software — the problems generic shops pass on.
German cars are rolling networks. Replacing a battery, a sensor or a module often requires registration or coding to work correctly. We have the tools and know-how to do it right.
What’s included
- Battery testing, replacement and registration
- Alternator and starter diagnosis
- Module programming and coding
- Window, lighting and sensor repair
- Parasitic-drain and wiring diagnosis
Signs you need it
- Car won't start or battery keeps dying
- Random warning lights and messages
- Windows, locks or lights misbehaving
- Start/stop system disabled
Why it matters
A new battery that isn't registered can overcharge or undercharge and fail early. Proper coding prevents those hidden problems.
Frequently asked questions
Do BMWs and Audis need the battery registered?
Yes. The car's charging system adjusts to battery age and size; skipping registration shortens battery life.
Can you retrofit options?
We handle many coding and retrofit jobs — call us with your model and what you want to enable.
Why does my car drain the battery overnight?
A module that doesn't go to sleep is the usual culprit. We trace the parasitic draw to the source.
Your German Car Deserves a Specialist.
Call (301) 881-1310 to book — same-week appointments available.