FAQ
TL;DR: To fix “Autocom CDP+ not detected,” do a 2x driver install—“you have to install drivers twice”—after connecting via USB. This simple step often restores detection on a new PC. [Elektroda, T5, post #17356213]
Why it matters: This FAQ helps Autocom/Delphi DS150E–CDP+ owners quickly resolve detection issues on newer laptops without bricking their interface.
Quick Facts
- Initial setup can require installing the CDP+ USB driver twice to complete enumeration. [Elektroda, T5, post #17356213]
- USB detection does not need OBD 12V; that power is only required when updating the head. [Elektroda, szymitsu21, post #17356313]
- Avoid clicking “Update” in Delphi 2015.3; leaving the tester unchanged preserves cross‑PC compatibility. [Elektroda, piotrekwoj1, post #17356233]
- If nothing happens on connect, swap to a known‑good USB cable and try again. [Elektroda, T5, post #17356272]
- In troubleshooting, look for an Unknown device entry in Windows Device Manager. [Elektroda, szymitsu21, post #17356193]
How do I get Windows to detect my Autocom CDP+ on a new laptop?
Connect the CDP+ by USB and install the drivers. Repeat the driver installation a second time to finish setup. Many users report detection after this 2x install. “You have to install drivers twice.”
How-To:
- Connect the CDP+ to your computer via USB.
- Install the prompted drivers.
- Install the drivers a second time when requested.
[Elektroda, T5, post #17356213]
Do I have to connect the CDP+ to the car to install drivers?
No. The PC can detect and install drivers over USB alone. OBD 12V power is only needed when updating the head firmware. As one expert put it: “Only needed to update the head.” [Elektroda, szymitsu21, post #17356313]
Windows 10 doesn’t see my CDP+. Is the OS the issue?
Focus on detection, not the OS. “The computer should detect the device.” Open Device Manager and look for an entry appearing or changing on plug‑in. If nothing changes, proceed with driver install and cable checks. Windows 10 can work once the device enumerates correctly. [Elektroda, szymitsu21, post #17356193]
What should I check in Device Manager during troubleshooting?
Plug in the CDP+ and watch Device Manager for new or changing entries. Specifically, look for an Unknown device. That clue points to missing drivers rather than a dead interface. This quick check guides the next step: install or reinstall drivers. [Elektroda, szymitsu21, post #17356193]
Can the USB cable be the reason my CDP+ isn’t detected?
Yes. A marginal or charge‑only cable can prevent USB enumeration. Swap in a known‑good, data‑rated cable and test again. Many detection issues disappear after a cable change. “Change the usb cable.” [Elektroda, T5, post #17356272]
Will Delphi 2015.3 break compatibility with my older 2013 install if I use the same CDP+?
Avoid the tester firmware update inside 2015.3. “If you don’t click the tester update then nothing should happen.” Keeping the head unchanged lets you use the same CDP+ across two laptops. This preserves compatibility between 2013 and 2015.3 installs. [Elektroda, piotrekwoj1, post #17356233]
Is Delphi 2015.3 coverage broader than 2013 for engines?
A user report notes broader coverage in 2015.3. For example, “more engines,” and 2013 lacked Laguna 1.5 dCi in their case. Database breadth varies by release, so pick the version that covers your vehicles. Consider retaining 2013 if it already meets your needs. [Elektroda, MateuszSt2000, post #17356235]
Do the CDP+ LEDs tell me anything during connection?
Yes. Use LED activity as a quick status check when plugging in. If the LEDs remain dark, verify power and the USB connection. If they light, proceed with driver installation. “LEDs light up?” is a key diagnostic hint. [Elektroda, szymitsu21, post #17356222]
When must I power the head from the OBD 12V socket?
Provide 12V from the vehicle OBD socket when updating the head. Without OBD power, the head may not enter update mode. “Connect to the car there must go 12V power from the OBD2 socket.” Use a stable battery or charger during updates. [Elektroda, itadek, post #17356311]
The CDP+ works on my old PC but not on a new one. What should I do first?
Install the interface drivers on the new PC and repeat the install twice. This two‑stage enumeration often enables proper detection. Connect via USB and complete both prompts. Afterward, retest in Device Manager and in your diagnostic app. [Elektroda, T5, post #17356213]
Should I try another computer to isolate the fault?
Yes. Testing on a second PC quickly distinguishes a host issue from a hardware fault. “See on another computer if it detects.” If it works elsewhere, focus on drivers, USB ports, or security policies on the problem PC. [Elektroda, szymitsu21, post #17356222]
Do I really need to install the CDP+ driver twice?
Many setups require a double pass for full enumeration. The first pass installs a base interface. The second completes the virtual device stack. Users solved detection by repeating the driver installation. “You have to install drivers twice.” [Elektroda, T5, post #17356213]
