LV= County Champions Warwickshire were frustrated in their attempts to force victory over Surrey on the final day of the Division One match at Guildford.
Surrey's first-innings collapse continued when they lost their final three wickets for the addition of just two runs and followed on 357 behind.
Yet with their joint leading wicket-taker Chris Wright unable to bowl and off the field because of illness, Warwickshire could only claim four more scalps all day as Surrey reached 234 for four and the safety of a draw at 5:50pm.
Surrey, who are still looking for their first championship win of the season, had lost four wickets in five overs on the third evening and their slide continued in the morning as their last three batsmen were dismissed in 16 deliveries.
Chris Tremlett became Boyd Rankin's fourth victim when he was caught behind, while Keith Barker had Ricky Ponting held at first slip for 52 and Jade Dernbach caught at mid-off. Barker finished with 4-45 and Rankin 4-43.
Warwickshire brought off-spinner Jeetan Patel into their attack after just five overs of Surrey's second innings in the hope that the former New Zealand Test player could exploit some slow turn.
Patel did make the breakthrough on 46 when Varun Chopra held a juggling catch at slip to dismiss Arun Harinath, but Rory Burns and Vikram Solanki calmed Surrey nerves with a stand of 66 in 28 overs either side of lunch.
Warwickshire captain Jim Troughton brought back his quicks and it paid off when Solanki was caught behind playing away from his body at Rankin for 18, having earlier survived a confident appeal for a catch at slip that was turned down after a lengthy consultation between umpires Nick Cook and Martin Bodenham.
The visitors' hopes were raised in the last over before tea when Burns, who had played superbly for his 85, got the faintest of edges as he pushed forward to a ball from Rikki Clarke that did just enough off the seam to take the edge.
Patel struck again after tea when Zander de Bruyn was held at silly point. There were still 21 overs remaining at that stage, but Ponting and Gary Wilson batted sensibly and added 48 in 20 overs prior to the players shaking hands.