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Home >> Mercedes Benz >> 2011 >> SL550 >> Repair and Diagnosis >> Suspension >> Wheels & Tire System >> Wheels, Tires & Chassis Alignment Check -- Trouble Diagnosis -- 230 Chassis >> Trouble Diagnosis >> Error message "Tire pressure control indicator defective" in instrument cluster (IC) and 5 dashes are indicated instead of pressure values. - AF40.15-P-6101A

Error message "Tire pressure control indicator defective" in instrument cluster (IC) and 5 dashes are indicated instead of pressure values. - AF40.15-P-6101A

MODEL 230.### #F as of 016293 up to 022294 

OPERATION NO. OF OPERATION TEXTS OR STANDARD TEXTS AND FLAT RATES

Category Op. no. Operation text Time Acc. no. Code
P 405070 Replace control unit for tire pressure control system (TPC) 014 work units/1.2 h - -
P 541011 Perform short test, erase FC 004 WU/0.3 h - -
Damage code Cause Remedy  
53 335 73 Hardware error in TPC control unit (oscillator indicates temperature-dependent behavior). IMPORTANT If you can confirm symptoms / notes mentioned above: ↓  
    1 Remove/install/replace TPC [RDK] control unit AR40.15-P-0100R
Fig 1: Identifying TPM (RDK) Control Unit
G05075419Courtesy of MERCEDES-BENZ USA
PARTS ORDERING NOTES

Part no. Designation Quantity
A 001 820 94 26 TPC control unit (433 MHz) r Q6 status 1
A 001 820 95 26 TPC control unit (315 MHz) r Q6 status 1