ATE760130 ABS Test Card for Magnetic Sensor Wheels

Used on Mercedes Benz wheel bearings

This tool is used to inspect the "magnet lines" on the ABS encoder ring part of bearing that are connected to ABS (anti-lock brake) systems. Those magnetic lines generate the AC millivolt pulse signal via a stationary sensor for each wheel that is sent to the ABS computer. The encoder ring looks like a flat plastic surface on one side of the bearing and has embedded magnetic line that are invisible without a tool like this. Installing a bearing with missing lines or too many lines or less lines as compare to your removed OEM bearing (when ABS was working properly) can cause ABS brake malfunction with warning light issues. I had to diagnose such a headache problem after installing a pair of rear Reybestos bearings on my 2008 Honda Accord. I surprising found "too many" magnetic lines on a third Reybestos bearing I ordered have on hand for repair/ then found defect on the 3rd bear/ returned to Rockauto with picture documentation. That defect caused ABS fault codes that translates into "wrong size tire" when all foour tires were same and stock size. A deeper ScanTool read produced 12 OEM ABS -VSA fault codes. I ordered a new set of Timken bearings. My inspection with this card tool plus magnifying digital pictures showed me magnetic line count on the Timken bearing matched up to my old OEM bearing (OEM means original equipment manufacturer). Giant help in figuring out my ABS malfunction problem. Installation of Timkens bearings provided full resolution of my ABS issues on my 2008 Honda Accord. ... Read some Honda Dealers even do an inspection of ABS encoder rings on the OEM bearings leaving their parts department because of the diagnostic headache produced when an oddball defect slips by. I would recommend using this encoder ring reader tool before swapping out any ABS related bearing. Thanks to the suppliers here for making this available!

I got this after seeing this (or a similar item) being used to check the ABS magnetic rings on press-in wheel bearings. It will show either the fine toothed ring or the larger chunkier teeth of the cheaper bearings.It was able to show me that my National bearings for a Jaguar X-type were large segments vs. the Timken bearings with the finer teeth.My current ABS issues with the Jag (wheel speed mismatch only) are likely related to the cheap bearings used that probably have the incorrect ABS ring teeth in them. The only way to know is the pull them and see.I recommend getting this little thing IF you do a lot of bearing replacements like this (not for wheel hub bearings, but stand-alone bearings that are pressed into a steering knuckle). Or if you have some other reason to view magnetic fields. :-)

Once you use these to look at the tone ring pattern, you can't "erase" the magnetic pattern. It's sad that you have to spend so much to use this tool a few times and need to throw it away. What an expensive proposition.

Just about the only option out there for this type of "tool."Yes, you can get generic sheets of LCD that react to magnetic fields, but check the reviews on those things, as they don't always work.ATE has done a great job and quality control to get this tool to work consistently.Yes, it's pricey for what you get, but this tool works 100% of the time without fail; just keep it in a safe place away from getting smashed or bang up.

Excelente, uso diario en Toyota dealership, no problemas

Simple tool but it helps so much trying to pin point ABS problems. Great time saver. Would recommend

Kinda pain to use.. doesnt really tell you too much.. wouldnt buy another if i lost it..