Oscilloscope Diagnosis · BMS Coding · Bench Rebuilds · CAN/LIN Tracing
From a phantom battery drain to a dead CAN bus, we trace the actual fault with current clamps and an oscilloscope — then register batteries, rebuild alternators and starters, and repair BCM/ECU modules in-house, road-tested before handover.
Parasitic Drain · AGM/EFB BMS Coding · Alternator Rebuild · Starter Motor · CAN / LIN Bus · BCM / ECU Repair. 1-Year Unconditional Warranty on Every Repair
25,075+ Cars Serviced · 15+ Years Experience · 4.8 ★ 1,297+ Reviews · 1-Year Warranty
Car electrical repair at Metre Per Second in Hyderabad is ₹1,500–₹3,500 for a full diagnostic session with an oscilloscope and OEM scan tool, ₹4,000–₹18,000 for wiring, sensor and parasitic-drain work, and ₹12,000–₹85,000 for module repair, replacement or programming. We trace faults on the CAN bus with a scope rather than swapping parts, so you pay for the fault that exists and not for a guess. Come in for a battery that flattens in two days, warning lights across unrelated systems, a car that will not crank, or a module that stopped talking after a jump start.
Metre Per Second — Premium Car Service and Repair is Hyderabad's dedicated auto-electrical workshop. Modern cars are rolling networks — a single AGM battery, a body control module and a dozen CAN/LIN nodes all talking at once — so a flat battery is rarely 'just the battery'. We diagnose on the manufacturer's own platforms (VW/Audi ODIS & VCDS, BMW ISTA, Mercedes XENTRY, Hyundai/Kia GDS) and with a lab scope, so you only pay for the fault your car truly has.
Electrical faults are where most garages guess and replace. A parasitic drain that kills a battery overnight, a module that won't enter sleep, a corroded SAM or FRM, an alternator with a failing decoupler pulley, or a battery swapped without BMS registration — each leaves a very different fingerprint. Our auto electricians read those fingerprints with a micro-amp current clamp, a thermal camera and an oscilloscope, then fix the root cause rather than swapping parts in the dark.
Over 15 years and 25,075+ vehicles across Hyderabad, we have built our name on honest electrical diagnosis, genuine components and a 1-year warranty on repairs. We bench-rebuild Bosch, Valeo, Hella, Mitsubishi and Denso alternators and starters, recover water-damaged BCM/ECU units, and code batteries correctly. Free pickup and drop across KPHB, Kukatpally, Madhapur, Gachibowli, Hi-Tech City, Banjara Hills and Jubilee Hills keeps your car moving without you losing a day.
Battery dead after sitting overnight? We measure the sleeping current with a micro-amp clamp, pull fuses systematically and isolate the offending module — infotainment not entering sleep, an aftermarket dashcam wired to a constant feed, or a stuck relay.
AGM and EFB stop-start batteries must be registered to the energy-management system after replacement — via ODIS/VCDS, ISTA, XENTRY or GDS. Skip it and a new battery dies in 6–12 months. We supply, fit and code the correct chemistry and capacity.
Bosch, Valeo, Hella, Mitsubishi and Denso alternator bench rebuilds — brushes, voltage regulators, bearings, slip rings and the overrunning decoupler (OAP) pulley — to cure flickering lights, undercharging and dashboard battery warnings.
Slow cranking, click-no-crank and intermittent starts traced to a worn solenoid, brushes, the starter relay or voltage drop across corroded earth straps — solenoid replacement and full starter overhaul.
Random warning lights, lost comms (U-codes) and gateway faults diagnosed on an oscilloscope, then BCM/comfort/gateway modules replaced and coded so every node on the bus communicates correctly.
Chafed door and tailgate looms, monsoon water in the BCM/SAM/footwell module, corroded pins and bad earths — repaired to OE standard with proper crimps, heat-shrink and re-sealing, not insulation tape.
We own and use an automotive oscilloscope and micro-amp clamps — the only reliable way to catch intermittent drains and bus faults that a code reader simply cannot see.
ODIS/VCDS, ISTA, XENTRY and GDS — the dealer's own software — so battery registration, BCM coding and adaptation are dealer-accurate, not generic guesses.
Alternators and starters are rebuilt under our roof with genuine Bosch/Valeo/Hella/Denso parts, so quality and turnaround stay in our control.
We repair wiring and recover water-damaged BCM/SAM/FRM modules instead of forcing an expensive new-unit-plus-coding bill where it isn't needed.
Electrical jobs are notorious for open-ended bills. You approve an itemised price after diagnosis — the invoice matches the quote.
Doorstep collection across KPHB, Kukatpally, Madhapur, Gachibowli, Hi-Tech City, Banjara Hills and Jubilee Hills, with every repair backed for a full year.
Fitting an AGM/EFB battery without registering it to the BMS/IBS leaves the alternator over- or under-charging it — the single most common reason a 'new' battery dies within a year.
Dashcams, audio amplifiers and alarms tapped into a constant 12V feed keep modules awake and quietly drain the battery while the car is parked.
Hyderabad's rains push water into footwell/SAM/BCM modules and connector blocks, corroding pins and triggering random comfort and lighting faults.
Body and engine earth straps corrode in our humidity, adding resistance that starves starters and confuses sensors — without ever setting an obvious code.
Stop-go traffic and engine-bay heat wear alternator brushes, regulators and the overrunning decoupler pulley, causing undercharging, flicker and belt rattle.
Chewed insulation and looms rubbing against the body at door hinges, tailgates and the engine bay create shorts and intermittent open circuits.
On any stop-start car, insist the replacement battery is registered to the BMS/IBS with the correct chemistry and capacity — it's the cheapest way to protect battery life.
Have dashcams, audio and alarms wired to an ignition-switched (or proper sleep-aware) circuit so nothing keeps the car awake when parked.
Clear cowl and sunroof drains and check door/boot seals before the monsoon so water never reaches the electronics.
Have battery terminals and body/engine earths cleaned and dielectric-greased during service to stop voltage-drop faults before they start.
A two-minute alternator output and battery health check at each service catches undercharging and a weak battery before you're stranded.
A flickering light, a battery warning or an intermittent feature is the early sign of a drain or bus fault — scanning it early prevents a no-start.
| Service | Price (₹) | Notes |
|---|---|---|
| Full Electrical Diagnostic Scan | ₹999 | All-module scan + report |
| AGM / EFB Battery Coding (BMS/IBS) | ₹1,499 | ODIS / ISTA / XENTRY / GDS |
| Parasitic-Drain Diagnosis & Isolation | ₹1,999 | Micro-amp clamp + fuse mapping |
| Alternator Bench Rebuild | ₹4,500 – 12,000 | Brushes, regulator, bearings, OAP pulley |
| Starter Motor Overhaul | ₹3,500 – 9,000 | Solenoid, brushes & bench test |
| Wiring / BCM-ECU Repair & Coding | ₹After inspection | Loom repair or module recovery |
All specialty repair prices are confirmed with a fixed quote after a free inspection. Flat-rate services are the same price regardless of car brand.
What electrical repair typically costs at our KPHB workshop, how long the car stays with us, and what the job is covered by.
Skoda Octavia · EA888 TSI
Problem: A brand-new AGM battery was flat every two or three days. Two garages had already replaced the battery and the alternator with no improvement.
Work done: We measured a sleeping current well above the 30–50 mA spec, mapped it with a micro-amp clamp and fuse pulls, and found the infotainment/comfort module not entering sleep. We isolated the fault, re-coded the AGM battery on ODIS and confirmed correct shutdown.
Outcome: Sleeping current dropped to spec, the battery now holds for weeks of standing, and the customer avoided yet another wasted battery. (₹3,500)
Mercedes-Benz C-Class · OM651
Problem: Post-monsoon, the car showed multiple random warnings, dead interior lights and intermittent central locking. A dealer quoted a new Signal Acquisition Module plus coding.
Work done: XENTRY confirmed communication faults from the rear SAM. We removed it, dried and recovered the water-corroded board, repaired the affected pins, re-sealed the connector and the housing entry point.
Outcome: All faults cleared and features restored at a fraction of the new-module-plus-coding quote, with the water path sealed against future ingress. (₹9,800)
BMW 3 Series · B47 diesel
Problem: Battery warning light, flickering headlights and a faint rattle from the front of the engine on a high-mileage car.
Work done: Output testing showed unstable charging and ripple. We bench-rebuilt the Valeo alternator — new brushes, regulator, bearings and overrunning decoupler (OAP) pulley — and registered the battery on ISTA.
Outcome: Stable charging restored, lights steady, rattle gone, and the customer saved the cost of a full replacement alternator. (₹8,500)
★★★★★ Karthik Reddy, KPHB — Skoda Octavia
My new battery kept dying. Turned out the previous garage never coded the AGM. MPS registered it on ODIS and fixed a comfort-module drain. Six months later, zero issues. Finally someone who actually understood the problem.
★★★★★ Sandhya Rao, Gachibowli — Hyundai Creta
Random battery drain that two workshops couldn't find. They used a current clamp, traced it to the Bluelink module not sleeping, and isolated it. Transparent and quoted upfront. Highly recommend.
★★★★★ Imran Pasha, Banjara Hills — Mercedes-Benz C-Class
After the rains my car threw a dozen warning lights. The SAM module had water in it. They recovered it on the bench instead of selling me a new one — saved me a fortune. Scanned everything on XENTRY.
★★★★★ Vamshi Krishna, Kukatpally — BMW 3 Series
Charging warning and flickering lights. They rebuilt the alternator with a new decoupler pulley and registered the battery on ISTA. Smooth, dealer-level work at a fair price and free pickup.
★★★★★ Priyanka Nair, Madhapur — Audi A4
Intermittent electrical gremlins for months. They found a chafed door loom on the oscilloscope, repaired it properly with heat-shrink, and recoded the BCM. The car has been perfect since.
★★★★★ Ramesh Goud, Jubilee Hills — Mahindra XUV500
Slow cranking and a click no-start. Earth straps were corroded and the starter solenoid was worn. They overhauled the starter and cleaned the earths. Cranks instantly now. Very honest team.
The electrical repair terms that appear on our estimates, job cards and diagnostic reports — in plain English, written by the technicians who use them.
Usually not. An overnight drain is almost always a parasitic draw from a module that won't sleep, an aftermarket accessory on a constant feed, or a battery that was never coded to the car. We measure the sleeping current with a micro-amp clamp and isolate the exact cause instead of just selling another battery.
Cars with stop-start use AGM or EFB batteries managed by a BMS/IBS. After a replacement, the system must be told the new battery's type and capacity so the alternator charges it correctly. Skip this step and the new battery is over- or under-charged and often dies within 6–12 months. We code it on ODIS, ISTA, XENTRY or GDS.
Yes — that's our specialty. Intermittent shorts, drains and CAN/LIN bus faults rarely set a clear code, so we use an oscilloscope, micro-amp clamp, thermal camera and voltage-drop testing against wiring diagrams to pin-point the broken wire, corroded pin or failing module.
We repair wherever it's safe and lasting — chafed looms get proper crimps and heat-shrink, and water-damaged BCM/SAM/footwell modules are often recovered on the bench. We only recommend a new module when repair isn't viable, and we prove it during diagnosis.
Yes. We bench-rebuild Bosch, Valeo, Hella, Mitsubishi and Denso units — brushes, regulators, bearings, slip rings, the overrunning decoupler pulley, and starter solenoids — usually for much less than a new unit, with a warranty.
A full all-module diagnostic scan is ₹999, battery coding ₹1,499, parasitic-drain diagnosis ₹1,999, alternator rebuilds ₹4,500–₹12,000 and starter overhauls ₹3,500–₹9,000. Loom and module repairs are quoted after inspection. You always get a fixed price before any work starts.
Yes, free pickup and drop across KPHB, Kukatpally, Madhapur, Gachibowli, Hi-Tech City, Banjara Hills and Jubilee Hills.
Yes — every electrical repair and rebuild is backed by a 1-year unconditional warranty.
Mercedes-Benz C-Class · Mercedes-Benz E-Class · BMW 3 Series · BMW 5 Series · Audi A4 · Audi Q5 · Volvo XC90 · Land Rover Range Rover
ECM / TCM Repair · Engine Overhaul · Automatic Transmission Repair · DPF Repair · Injector Service
Pick your brand for the full model coverage list, the systems fitted and what the job involves.