TSB Document:

Affected Component: VEHICLE SPEED CONTROL

Summary
RELAY, Micro **This applies to the 2020 KL and 2021 KL Only!!** Owner reports in colder temperatures the vehicle may exhibit a No Start or and/or a Start and Stall fail to Start condition. Vehicle will start normally when PDC or vehicle is warmed up. This symptom may also be accompanied by DTC P1279 -STARTER CONTROL CIRCUIT 2 OPEN. Refer to SOL Publication S2108000002 REV B to ensure it is applicable to the vehicle prior to moving forward. For SOL S2108000002 REV B, the Denso 68406797AA may not be available / may be on Backorder. In the event 68406797AA is on backorder, another validated Denso relay to use is 68244159AA. Quantities for this relay are limited, we kindly request to only order on an as needed basis until mid March 2021 so customer vehicles currently exhibiting this issue can be repaired. CAUTION: Denso relay part number 68244159AA can only be used in the Run/Start relay location. Premature relay failure will occur if used in other locations. Other locations require relays which can handle higher duty cycle requirements. Note: Only the Run/Start relay will require replacement for the issue identified in S2108000002 REV B. No other Song Chuan relays should be replaced for this condition.

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Date Published
FEB 17, 2021
NHTSA TSB #
10220495
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