Bosch Diagnostics / Bosch KTS diagnostic testers
The KTS 550 is the higher-measurement companion to the KTS 520. Bosch documents ECU diagnosis, a two-channel multimeter and a two-channel oscilloscope, with RS-232 and USB PC connections.
Hickleys lists update cut-offs for some legacy testers; its published dates are distributor information, not a guarantee of present worldwide support. Verify the exact software release and subscription before purchase.
Photographs and screenshots
Related pages
Sources
Curated reference notes. Applicability follows the cited sources; hardware testing by this wiki is not implied.
- Bosch KTS 520 and 550 device description. Robert Bosch GmbH, 2004; English section. Source revision page or document reviewed 2026-11-10; accessed 2026-11-10.
- Hickleys: Bosch software and older tester updates. Hickleys, UK distributor; update information is as listed. Source revision page or document reviewed 2026-11-10; accessed 2026-11-10.