{"id":12363,"date":"2026-07-14T23:36:37","date_gmt":"2026-07-14T21:36:37","guid":{"rendered":"https:\/\/wp.stromer-tech.info\/?post_type=ht_kb&p=12363"},"modified":"2026-08-13T14:07:58","modified_gmt":"2026-08-13T12:07:58","slug":"clean-tmm-sensor","status":"publish","type":"ht_kb","link":"https:\/\/wp.stromer-tech.info\/en\/knowledge-base\/tmm-sensor-reinigen\/","title":{"rendered":"Clean TMM sensor"},"content":{"rendered":"

The TMM sensor in the right chainstay is the crucial component when it comes to drive assistance for electric bikes. If something is wrong with the sensor, it becomes immediately noticeable in the assistance.<\/p>\n\n\n\n

ID Bike, the manufacturer, has improved the design of the sensor plate and the sensor in several ways during model development. For example, these and the supply cable have been completely potted. The slot width, which allows for movement variation, has been massively increased and is less susceptible to dirt. The mechanical adjustment elements of the magnet have also been completely removed, and the magnet has been glued into the plate.<\/p>\n\n\n\n

Die Sensorelektronik (Hallelement) ist gegen Schmutz gesch\u00fctzt. Trotzdem ist dieser eine m\u00f6gliche Fehlerquelle, da er sich rund um den Magneten ablagern kann oder die Messausfr\u00e4sung auff\u00fcllt, und somit die Messung der Ketten- bzw. Riemenkraft beeinflussen kann.<\/p>\n\n\n

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Der Sensor ist in den ersten vier Bildern stark durch eine Mischung von Ketten\u00f6l, Strassenschmutz und Antriebsabrieb verschmutzt. Eine Funktionsst\u00f6rung, und damit einhergehend Unterst\u00fctzungsprobleme, sind wahrscheinlich, dies obwohl die Sensor-Elektronik (Hallelement) selber versiegelt ist.<\/figcaption><\/figure>\n<\/div>\n\n\n

The reason for this grime is the operation of the vehicle, but also incorrect lubrication of the chain. The chain oil, the fine metallic abrasion from the chain and sprockets, and street dirt combine to form a sticky, sometimes coked emulsion that can completely \u201eglue\u201c the sensor. The iron particles can interfere with the magnet and thus the force measurement, leading to fluctuations in assistance or even a complete failure.<\/p>\n\n\n\n

Cleaning<\/h3>\n\n\n\n

For cleaning, you should remove the rear wheel. You may not use metallic, pointed, or sharp objects as cleaning tools. It is best to use a fine brush or a toothbrush, as well as cleaning paper \u2013 and if available, compressed air \u2013 to remove all dirt. Use brake cleaner, cleaning gasoline, or a degreasing bicycle cleaner as cleaning agents.<\/p>\n\n\n\n

If you have a cleaning bath, you can also remove the sensor, clean it inside, and then carefully blow it out with compressed air. I would not recommend an ultrasonic bath, as this could damage the sensor.<\/p>\n\n\n\n

The Installation<\/strong> des Sensors ist here<\/a> described.<\/p>\n\n\n\n

<\/p>","protected":false},"excerpt":{"rendered":"

Der TMM-Sensor in der rechten Kettenstrebe ist die entscheidende Komponente, wenn es um die Fahrtunterst\u00fctzung bei den Stromern geht. Stimmt mit dem Sensor etwas nicht macht sich dies sofort bei der Unterst\u00fctzung bemerkbar. I|D Bike, der Hersteller, hat im Laufe der Modellentwicklung einiges am Design der Sensorplatte und des Sensors…<\/p>","protected":false},"author":1,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"ht-kb-category":[108],"ht-kb-tag":[578,579,577,576],"class_list":["post-12363","ht_kb","type-ht_kb","status-publish","format-standard","hentry","ht_kb_category-tmm-sensor","ht_kb_tag-hallelement","ht_kb_tag-magnet","ht_kb_tag-reinigen","ht_kb_tag-tmm-sensor-reinigen"],"_links":{"self":[{"href":"https:\/\/wp.stromer-tech.info\/en\/wp-json\/wp\/v2\/ht-kb\/12363","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.stromer-tech.info\/en\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"https:\/\/wp.stromer-tech.info\/en\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/wp.stromer-tech.info\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.stromer-tech.info\/en\/wp-json\/wp\/v2\/comments?post=12363"}],"version-history":[{"count":23,"href":"https:\/\/wp.stromer-tech.info\/en\/wp-json\/wp\/v2\/ht-kb\/12363\/revisions"}],"predecessor-version":[{"id":13148,"href":"https:\/\/wp.stromer-tech.info\/en\/wp-json\/wp\/v2\/ht-kb\/12363\/revisions\/13148"}],"wp:attachment":[{"href":"https:\/\/wp.stromer-tech.info\/en\/wp-json\/wp\/v2\/media?parent=12363"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/wp.stromer-tech.info\/en\/wp-json\/wp\/v2\/ht-kb-category?post=12363"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/wp.stromer-tech.info\/en\/wp-json\/wp\/v2\/ht-kb-tag?post=12363"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}