San Marcos,
where we dispatch.
Spot-On Automotive Diagnostics dispatches mobile module programming, ADAS calibration, key & immobilizer services, electrical diagnostics, and diesel work to repair shops, body shops, transmission shops, and dealerships in San Marcos, Texas. San Marcos is beyond our 20-mile free-dispatch zone; a $2.50 per-mile round-trip trip charge applies. Remote J2534 programming and mail-in bench service may be more economical at this distance.
On-site programming at your bay.
San Marcos is approximately 55 miles north of our San Antonio shop along I-35. We do dispatch to San Marcos for partner shops, but at this distance the trip charge becomes significant — remote J2534 or mail-in bench is often the more economical choice for single-job work.
Lower cost, faster turnaround for most jobs.
Remote J2534 programming through your shop's pass-thru device or compatible Autel MaxiSys avoids the trip charge entirely. We connect from our shop and run the full OEM toolchain through your equipment. Mail-in bench service handles boot-mode reads, BMW DME ISN retrieval, Mercedes 722.9 TCM cloning, FRM data recovery, and other procedures that can't go through the OBD port. Ship the module, we work it, ship it back.
The jobs that justify the trip.
Multi-module work that would take a half-day or more of remote-session time, ADAS calibration requiring on-site target setup, and high-stakes work where being physically present in the bay matters. Call (210) 439-7905 — we'll tell you straight up whether dispatch or remote makes more sense for your specific job.
Dispatch us to your San Marcos bay.
Call with the OEM, module, and fault codes. Same-day available for most platforms during business hours.