17/12/2025
At Deegans Auto Repairs
we’ve just brought this Mercedes-Benz GLA 180 DCT Urban Edition back to life after a flat, tired battery killed the Eco stop-start system
The old AGM unit was down to 8 V under load, so we pulled it from the car and fitted a new AGM battery, then coded the energy-management module so the ECU “learned” the fresh capacity, serial and BMS profile.
A few ignition cycles later the green Eco light re-appeared; we topped the tank with a measured shot of OEM fuel-system cleaner to decarbon the direct-injection valves, then road-tested—engine fires instantly, auto stop-start cuts in at every junction and the 7G-DCT changes silky-smooth.
Owner keeps the hushed cabin, loses the flat-morning no-crank drama.
✅ Benefits of today’s work:
• New AGM battery = full cranking power, 5-year service life
• ECU coding = correct SoC readings, zero spurious warnings
• Stop-start restored = instant silence at lights, lower CO₂ & urban fuel use
• Fuel cleaner = cleaner injectors, smoother cold idle
• Mobile job = GLA180 fixed at home, no dealer queue or tow bill
📞 Battery light on or stop-start missing? Call Deegans Auto Repairs on 07940 808270 and we’ll bring the workshop to you.