Bosch KTS 520

Bosch Diagnostics / Bosch KTS diagnostic testers

The KTS 520 is a separate ECU-diagnosis module for a PC or compatible Bosch test system. Bosch’s manual specifies one-channel multimeter functions, RS-232 and USB connections; it does not have the KTS 550’s two-channel oscilloscope.

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

• Bosch manual with connection and device illustrations

Related pages

• Bosch KTS 550
• Bosch KTS 500 ISA interface
• Porsche and Bosch tester hardware relationships

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.