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133 Posts
Discussion Starter · #1 ·
Randomly get a no start issue. Starter turns over, but not starting. Getting a security code that deals with the rolling code between the key and the vehicle. Bought a new key to see if it was a transponder issue with the key, but did not fix the problem. Does it with the other 2 keys as well. I can take my code tool and delete the DTC's and the problem is temporarily corrected. Getting the following code:
0043- Key 5-Random Code Tolerance Increased
000E- Engine ECU Random Code XOR Error
39-EWS 3.3 Tampering Protection

The problem seems to be within the vehicle and not the keys. Any ideas?
2003 RR 4.4L

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