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Speedometer and odometer stopped working

Tiny
ANONYMOUS
  • MEMBER
  • 2000 LEXUS RX 300
  • 150,000 MILES
The speedometer and odometer both stopped working. The code was P0500, defective speed sensor, so I changed both speed sensors at the transmission and it did not fix the problem
Friday, November 9th, 2012 AT 7:31 PM

3 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Based on information in our database, the speed sensors are via the ABS control unit and from wheel sensors. Are you sure you replaced the correct component?

DTC P0500: VEHICLE SPEED SENSOR (VSS) MALFUNCTION

Circuit Description

Anti-Lock Brake System (ABS) wheel speed sensors detects wheel speed and sends signals to ABS ECU. The ABS ECU converts signals into a 4-pulse signal and outputs signal to instrument cluster. Instrument cluster converts signal to a more precise waveform and outputs signal to ECM. ECM determines vehicle speed based on frequency of these pulse signals. DTC is set when ECM does not detect any VSS signal while vehicle is in motion. Possible causes are:

l Faulty wheel speed sensors.
L Open or short in VSS circuit.
L Faulty instrument cluster.
L Faulty ECM.
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Sunday, November 18th, 2012 AT 6:57 PM
Tiny
ABUELLIA
  • MEMBER
  • 1 POST
I experienced this problem today. Trouble code. I check the speed sensor, and wheel sensor by my scanner. It was fine, I disconnected the instrument cluster, cleaned the connection then installed it back. I cleared the trouble code, then test drive. It was good ;) check engine light did not come back, and both of the odometer and the speedometer working again.
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Wednesday, February 15th, 2017 AT 4:48 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hey ABUELLIA,

Great addition to this thread! Please feel free to help out on the site whenever it can add information that will help people.

Best, Ken
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Saturday, February 18th, 2017 AT 5:16 PM

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